Home / 10,357.12-15,543.20-7,767.04

Finding the Fourth Proportional to 10,357.12, 15,543.20 and 7,767.04

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Solution

The fourth proportional to 10,357.12, 15,543.20 and 7,767.04 is: 11,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,357.12 : 15,543.20 = 7,767.04 : x
  2. Step 2: Convert to fraction form
    10,357.12/15,543.20 = 7,767.04/x
  3. Step 3: Cross multiply
    10,357.12x = 15,543.20 × 7,767.04
  4. Step 4: Simplify right side
    10,357.12x = 120,724,656.13
  5. Step 5: Solve for x
    x = 120,724,656.13/10,357.12
  6. Step 6: Final answer
    x = 11,656.20

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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.