Home / 10,342.12-15,520.70-7,752.04

Finding the Fourth Proportional to 10,342.12, 15,520.70 and 7,752.04

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Solution

The fourth proportional to 10,342.12, 15,520.70 and 7,752.04 is: 11,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,342.12 : 15,520.70 = 7,752.04 : x
  2. Step 2: Convert to fraction form
    10,342.12/15,520.70 = 7,752.04/x
  3. Step 3: Cross multiply
    10,342.12x = 15,520.70 × 7,752.04
  4. Step 4: Simplify right side
    10,342.12x = 120,317,087.23
  5. Step 5: Solve for x
    x = 120,317,087.23/10,342.12
  6. Step 6: Final answer
    x = 11,633.70

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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.