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Finding the Fourth Proportional to 13,342.20, 20,013.30 and 7,437.30

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Solution

The fourth proportional to 13,342.20, 20,013.30 and 7,437.30 is: 11,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.20 : 20,013.30 = 7,437.30 : x
  2. Step 2: Convert to fraction form
    13,342.20/20,013.30 = 7,437.30/x
  3. Step 3: Cross multiply
    13,342.20x = 20,013.30 × 7,437.30
  4. Step 4: Simplify right side
    13,342.20x = 148,844,916.09
  5. Step 5: Solve for x
    x = 148,844,916.09/13,342.20
  6. Step 6: Final answer
    x = 11,155.95

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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.