Home / 21,864.17-30,169.77-12,432.93

Finding the Fourth Proportional to 21,864.17, 30,169.77 and 12,432.93

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Solution

The fourth proportional to 21,864.17, 30,169.77 and 12,432.93 is: 17,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.17 : 30,169.77 = 12,432.93 : x
  2. Step 2: Convert to fraction form
    21,864.17/30,169.77 = 12,432.93/x
  3. Step 3: Cross multiply
    21,864.17x = 30,169.77 × 12,432.93
  4. Step 4: Simplify right side
    21,864.17x = 375,098,638.53
  5. Step 5: Solve for x
    x = 375,098,638.53/21,864.17
  6. Step 6: Final answer
    x = 17,155.86

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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.