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Finding the Fourth Proportional to 13,560.05, 18,710.71 and 7,591.97

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Solution

The fourth proportional to 13,560.05, 18,710.71 and 7,591.97 is: 10,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.05 : 18,710.71 = 7,591.97 : x
  2. Step 2: Convert to fraction form
    13,560.05/18,710.71 = 7,591.97/x
  3. Step 3: Cross multiply
    13,560.05x = 18,710.71 × 7,591.97
  4. Step 4: Simplify right side
    13,560.05x = 142,051,149.00
  5. Step 5: Solve for x
    x = 142,051,149.00/13,560.05
  6. Step 6: Final answer
    x = 10,475.71

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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.