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Finding the Fourth Proportional to 18,601.70, 27,902.55 and 13,061.30

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Solution

The fourth proportional to 18,601.70, 27,902.55 and 13,061.30 is: 19,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.70 : 27,902.55 = 13,061.30 : x
  2. Step 2: Convert to fraction form
    18,601.70/27,902.55 = 13,061.30/x
  3. Step 3: Cross multiply
    18,601.70x = 27,902.55 × 13,061.30
  4. Step 4: Simplify right side
    18,601.70x = 364,443,576.32
  5. Step 5: Solve for x
    x = 364,443,576.32/18,601.70
  6. Step 6: Final answer
    x = 19,591.95

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1.5x scale

Why These Related Problems?

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