Home / 10,387.04-15,580.57-8,229.20

Finding the Fourth Proportional to 10,387.04, 15,580.57 and 8,229.20

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Solution

The fourth proportional to 10,387.04, 15,580.57 and 8,229.20 is: 12,343.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.04 : 15,580.57 = 8,229.20 : x
  2. Step 2: Convert to fraction form
    10,387.04/15,580.57 = 8,229.20/x
  3. Step 3: Cross multiply
    10,387.04x = 15,580.57 × 8,229.20
  4. Step 4: Simplify right side
    10,387.04x = 128,215,626.64
  5. Step 5: Solve for x
    x = 128,215,626.64/10,387.04
  6. Step 6: Final answer
    x = 12,343.81

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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.