Home / 10,369.12-15,543.60-5,159.20

Finding the Fourth Proportional to 10,369.12, 15,543.60 and 5,159.20

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Solution

The fourth proportional to 10,369.12, 15,543.60 and 5,159.20 is: 7,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.12 : 15,543.60 = 5,159.20 : x
  2. Step 2: Convert to fraction form
    10,369.12/15,543.60 = 5,159.20/x
  3. Step 3: Cross multiply
    10,369.12x = 15,543.60 × 5,159.20
  4. Step 4: Simplify right side
    10,369.12x = 80,192,541.12
  5. Step 5: Solve for x
    x = 80,192,541.12/10,369.12
  6. Step 6: Final answer
    x = 7,733.78

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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.