Home / 10,375.20-15,562.80-6,681.60

Finding the Fourth Proportional to 10,375.20, 15,562.80 and 6,681.60

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Solution

The fourth proportional to 10,375.20, 15,562.80 and 6,681.60 is: 10,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.20 : 15,562.80 = 6,681.60 : x
  2. Step 2: Convert to fraction form
    10,375.20/15,562.80 = 6,681.60/x
  3. Step 3: Cross multiply
    10,375.20x = 15,562.80 × 6,681.60
  4. Step 4: Simplify right side
    10,375.20x = 103,984,404.48
  5. Step 5: Solve for x
    x = 103,984,404.48/10,375.20
  6. Step 6: Final answer
    x = 10,022.40

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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.