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Finding the Fourth Proportional to 13,393.32, 18,482.15 and 7,424.85

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Solution

The fourth proportional to 13,393.32, 18,482.15 and 7,424.85 is: 10,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.32 : 18,482.15 = 7,424.85 : x
  2. Step 2: Convert to fraction form
    13,393.32/18,482.15 = 7,424.85/x
  3. Step 3: Cross multiply
    13,393.32x = 18,482.15 × 7,424.85
  4. Step 4: Simplify right side
    13,393.32x = 137,227,279.30
  5. Step 5: Solve for x
    x = 137,227,279.30/13,393.32
  6. Step 6: Final answer
    x = 10,245.95

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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.