Home / 13,140.20-19,710.50-4,375.12

Finding the Fourth Proportional to 13,140.20, 19,710.50 and 4,375.12

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Solution

The fourth proportional to 13,140.20, 19,710.50 and 4,375.12 is: 6,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.20 : 19,710.50 = 4,375.12 : x
  2. Step 2: Convert to fraction form
    13,140.20/19,710.50 = 4,375.12/x
  3. Step 3: Cross multiply
    13,140.20x = 19,710.50 × 4,375.12
  4. Step 4: Simplify right side
    13,140.20x = 86,235,731.61
  5. Step 5: Solve for x
    x = 86,235,731.61/13,140.20
  6. Step 6: Final answer
    x = 6,562.74

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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.