Home / 21,364.47-29,441.31-15,384.84

Finding the Fourth Proportional to 21,364.47, 29,441.31 and 15,384.84

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Solution

The fourth proportional to 21,364.47, 29,441.31 and 15,384.84 is: 21,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.47 : 29,441.31 = 15,384.84 : x
  2. Step 2: Convert to fraction form
    21,364.47/29,441.31 = 15,384.84/x
  3. Step 3: Cross multiply
    21,364.47x = 29,441.31 × 15,384.84
  4. Step 4: Simplify right side
    21,364.47x = 452,949,843.74
  5. Step 5: Solve for x
    x = 452,949,843.74/21,364.47
  6. Step 6: Final answer
    x = 21,201.08

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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.