Home / 10,240.09-15,350.85-7,121.55

Finding the Fourth Proportional to 10,240.09, 15,350.85 and 7,121.55

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Solution

The fourth proportional to 10,240.09, 15,350.85 and 7,121.55 is: 10,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,240.09 : 15,350.85 = 7,121.55 : x
  2. Step 2: Convert to fraction form
    10,240.09/15,350.85 = 7,121.55/x
  3. Step 3: Cross multiply
    10,240.09x = 15,350.85 × 7,121.55
  4. Step 4: Simplify right side
    10,240.09x = 109,321,903.38
  5. Step 5: Solve for x
    x = 109,321,903.38/10,240.09
  6. Step 6: Final answer
    x = 10,675.88

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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.