Home / 20,863.32-31,108.86-18,545.10

Finding the Fourth Proportional to 20,863.32, 31,108.86 and 18,545.10

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Solution

The fourth proportional to 20,863.32, 31,108.86 and 18,545.10 is: 27,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.32 : 31,108.86 = 18,545.10 : x
  2. Step 2: Convert to fraction form
    20,863.32/31,108.86 = 18,545.10/x
  3. Step 3: Cross multiply
    20,863.32x = 31,108.86 × 18,545.10
  4. Step 4: Simplify right side
    20,863.32x = 576,916,919.59
  5. Step 5: Solve for x
    x = 576,916,919.59/20,863.32
  6. Step 6: Final answer
    x = 27,652.21

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.