Home / 20,288.08-28,033.32-15,612.76

Finding the Fourth Proportional to 20,288.08, 28,033.32 and 15,612.76

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Solution

The fourth proportional to 20,288.08, 28,033.32 and 15,612.76 is: 21,573.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.08 : 28,033.32 = 15,612.76 : x
  2. Step 2: Convert to fraction form
    20,288.08/28,033.32 = 15,612.76/x
  3. Step 3: Cross multiply
    20,288.08x = 28,033.32 × 15,612.76
  4. Step 4: Simplify right side
    20,288.08x = 437,677,497.16
  5. Step 5: Solve for x
    x = 437,677,497.16/20,288.08
  6. Step 6: Final answer
    x = 21,573.14

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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.