Home / 21,689.28-29,901.60-13,727.52

Finding the Fourth Proportional to 21,689.28, 29,901.60 and 13,727.52

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Solution

The fourth proportional to 21,689.28, 29,901.60 and 13,727.52 is: 18,925.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689.28 : 29,901.60 = 13,727.52 : x
  2. Step 2: Convert to fraction form
    21,689.28/29,901.60 = 13,727.52/x
  3. Step 3: Cross multiply
    21,689.28x = 29,901.60 × 13,727.52
  4. Step 4: Simplify right side
    21,689.28x = 410,474,812.03
  5. Step 5: Solve for x
    x = 410,474,812.03/21,689.28
  6. Step 6: Final answer
    x = 18,925.24

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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.