Home / 10,349.12-15,531.20-7,759.04

Finding the Fourth Proportional to 10,349.12, 15,531.20 and 7,759.04

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Solution

The fourth proportional to 10,349.12, 15,531.20 and 7,759.04 is: 11,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,349.12 : 15,531.20 = 7,759.04 : x
  2. Step 2: Convert to fraction form
    10,349.12/15,531.20 = 7,759.04/x
  3. Step 3: Cross multiply
    10,349.12x = 15,531.20 × 7,759.04
  4. Step 4: Simplify right side
    10,349.12x = 120,507,202.05
  5. Step 5: Solve for x
    x = 120,507,202.05/10,349.12
  6. Step 6: Final answer
    x = 11,644.20

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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.