Home / 21,423.96-29,565.18-11,864.16

Finding the Fourth Proportional to 21,423.96, 29,565.18 and 11,864.16

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Solution

The fourth proportional to 21,423.96, 29,565.18 and 11,864.16 is: 16,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.96 : 29,565.18 = 11,864.16 : x
  2. Step 2: Convert to fraction form
    21,423.96/29,565.18 = 11,864.16/x
  3. Step 3: Cross multiply
    21,423.96x = 29,565.18 × 11,864.16
  4. Step 4: Simplify right side
    21,423.96x = 350,766,025.95
  5. Step 5: Solve for x
    x = 350,766,025.95/21,423.96
  6. Step 6: Final answer
    x = 16,372.60

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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.