Home / 28,240,027,573.32-38,975,474,911.41-21,454,680,509.69

Finding the Fourth Proportional to 28,240,027,573.32, 38,975,474,911.41 and 21,454,680,509.69

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Solution

The fourth proportional to 28,240,027,573.32, 38,975,474,911.41 and 21,454,680,509.69 is: 29,610,677,955.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240,027,573.32 : 38,975,474,911.41 = 21,454,680,509.69 : x
  2. Step 2: Convert to fraction form
    28,240,027,573.32/38,975,474,911.41 = 21,454,680,509.69/x
  3. Step 3: Cross multiply
    28,240,027,573.32x = 38,975,474,911.41 × 21,454,680,509.69
  4. Step 4: Simplify right side
    28,240,027,573.32x = 836,206,361,937,545,003,008
  5. Step 5: Solve for x
    x = 836,206,361,937,545,003,008/28,240,027,573.32
  6. Step 6: Final answer
    x = 29,610,677,955.84

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.