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Finding the Fourth Proportional to 15,061.66, 20,785.22 and 8,347.40

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Solution

The fourth proportional to 15,061.66, 20,785.22 and 8,347.40 is: 11,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,061.66 : 20,785.22 = 8,347.40 : x
  2. Step 2: Convert to fraction form
    15,061.66/20,785.22 = 8,347.40/x
  3. Step 3: Cross multiply
    15,061.66x = 20,785.22 × 8,347.40
  4. Step 4: Simplify right side
    15,061.66x = 173,502,545.43
  5. Step 5: Solve for x
    x = 173,502,545.43/15,061.66
  6. Step 6: Final answer
    x = 11,519.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.