Home / 13,487.20-18,610.08-7,517.56

Finding the Fourth Proportional to 13,487.20, 18,610.08 and 7,517.56

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Solution

The fourth proportional to 13,487.20, 18,610.08 and 7,517.56 is: 10,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.20 : 18,610.08 = 7,517.56 : x
  2. Step 2: Convert to fraction form
    13,487.20/18,610.08 = 7,517.56/x
  3. Step 3: Cross multiply
    13,487.20x = 18,610.08 × 7,517.56
  4. Step 4: Simplify right side
    13,487.20x = 139,902,393.00
  5. Step 5: Solve for x
    x = 139,902,393.00/13,487.20
  6. Step 6: Final answer
    x = 10,372.98

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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.