Home / 21,549.13-29,737.50-12,117.71

Finding the Fourth Proportional to 21,549.13, 29,737.50 and 12,117.71

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Solution

The fourth proportional to 21,549.13, 29,737.50 and 12,117.71 is: 16,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.13 : 29,737.50 = 12,117.71 : x
  2. Step 2: Convert to fraction form
    21,549.13/29,737.50 = 12,117.71/x
  3. Step 3: Cross multiply
    21,549.13x = 29,737.50 × 12,117.71
  4. Step 4: Simplify right side
    21,549.13x = 360,350,401.13
  5. Step 5: Solve for x
    x = 360,350,401.13/21,549.13
  6. Step 6: Final answer
    x = 16,722.28

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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.