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Finding the Fourth Proportional to 11,562.87, 15,955.05 and 6,781.01

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Solution

The fourth proportional to 11,562.87, 15,955.05 and 6,781.01 is: 9,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,562.87 : 15,955.05 = 6,781.01 : x
  2. Step 2: Convert to fraction form
    11,562.87/15,955.05 = 6,781.01/x
  3. Step 3: Cross multiply
    11,562.87x = 15,955.05 × 6,781.01
  4. Step 4: Simplify right side
    11,562.87x = 108,191,239.92
  5. Step 5: Solve for x
    x = 108,191,239.92/11,562.87
  6. Step 6: Final answer
    x = 9,356.78

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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.