Home / 22,545.36-31,117.50-13,115.16

Finding the Fourth Proportional to 22,545.36, 31,117.50 and 13,115.16

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Solution

The fourth proportional to 22,545.36, 31,117.50 and 13,115.16 is: 18,101.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,545.36 : 31,117.50 = 13,115.16 : x
  2. Step 2: Convert to fraction form
    22,545.36/31,117.50 = 13,115.16/x
  3. Step 3: Cross multiply
    22,545.36x = 31,117.50 × 13,115.16
  4. Step 4: Simplify right side
    22,545.36x = 408,110,991.30
  5. Step 5: Solve for x
    x = 408,110,991.30/22,545.36
  6. Step 6: Final answer
    x = 18,101.77

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Double scale
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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.