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Finding the Fourth Proportional to 13,387.58, 18,474.83 and 7,337.82

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Solution

The fourth proportional to 13,387.58, 18,474.83 and 7,337.82 is: 10,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.58 : 18,474.83 = 7,337.82 : x
  2. Step 2: Convert to fraction form
    13,387.58/18,474.83 = 7,337.82/x
  3. Step 3: Cross multiply
    13,387.58x = 18,474.83 × 7,337.82
  4. Step 4: Simplify right side
    13,387.58x = 135,564,922.57
  5. Step 5: Solve for x
    x = 135,564,922.57/13,387.58
  6. Step 6: Final answer
    x = 10,126.17

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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.