Home / 21,565.18-29,757.98-12,611.13

Finding the Fourth Proportional to 21,565.18, 29,757.98 and 12,611.13

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Solution

The fourth proportional to 21,565.18, 29,757.98 and 12,611.13 is: 17,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.18 : 29,757.98 = 12,611.13 : x
  2. Step 2: Convert to fraction form
    21,565.18/29,757.98 = 12,611.13/x
  3. Step 3: Cross multiply
    21,565.18x = 29,757.98 × 12,611.13
  4. Step 4: Simplify right side
    21,565.18x = 375,281,605.53
  5. Step 5: Solve for x
    x = 375,281,605.53/21,565.18
  6. Step 6: Final answer
    x = 17,402.20

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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.