Home / 10,555.28-15,825.24-6,861.20

Finding the Fourth Proportional to 10,555.28, 15,825.24 and 6,861.20

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Solution

The fourth proportional to 10,555.28, 15,825.24 and 6,861.20 is: 10,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.28 : 15,825.24 = 6,861.20 : x
  2. Step 2: Convert to fraction form
    10,555.28/15,825.24 = 6,861.20/x
  3. Step 3: Cross multiply
    10,555.28x = 15,825.24 × 6,861.20
  4. Step 4: Simplify right side
    10,555.28x = 108,580,136.69
  5. Step 5: Solve for x
    x = 108,580,136.69/10,555.28
  6. Step 6: Final answer
    x = 10,286.81

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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.