Home / 18,545.16-25,587.88-10,990.19

Finding the Fourth Proportional to 18,545.16, 25,587.88 and 10,990.19

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Solution

The fourth proportional to 18,545.16, 25,587.88 and 10,990.19 is: 15,163.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,545.16 : 25,587.88 = 10,990.19 : x
  2. Step 2: Convert to fraction form
    18,545.16/25,587.88 = 10,990.19/x
  3. Step 3: Cross multiply
    18,545.16x = 25,587.88 × 10,990.19
  4. Step 4: Simplify right side
    18,545.16x = 281,215,689.25
  5. Step 5: Solve for x
    x = 281,215,689.25/18,545.16
  6. Step 6: Final answer
    x = 15,163.83

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Half scale
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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.