Home / 15,547.28-21,565.17-14,986.89

Finding the Fourth Proportional to 15,547.28, 21,565.17 and 14,986.89

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Solution

The fourth proportional to 15,547.28, 21,565.17 and 14,986.89 is: 20,787.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.28 : 21,565.17 = 14,986.89 : x
  2. Step 2: Convert to fraction form
    15,547.28/21,565.17 = 14,986.89/x
  3. Step 3: Cross multiply
    15,547.28x = 21,565.17 × 14,986.89
  4. Step 4: Simplify right side
    15,547.28x = 323,194,830.62
  5. Step 5: Solve for x
    x = 323,194,830.62/15,547.28
  6. Step 6: Final answer
    x = 20,787.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.