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Finding the Fourth Proportional to 13,593.43, 20,356.30 and 8,648.47

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Solution

The fourth proportional to 13,593.43, 20,356.30 and 8,648.47 is: 12,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.43 : 20,356.30 = 8,648.47 : x
  2. Step 2: Convert to fraction form
    13,593.43/20,356.30 = 8,648.47/x
  3. Step 3: Cross multiply
    13,593.43x = 20,356.30 × 8,648.47
  4. Step 4: Simplify right side
    13,593.43x = 176,050,849.86
  5. Step 5: Solve for x
    x = 176,050,849.86/13,593.43
  6. Step 6: Final answer
    x = 12,951.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.