Home / 10,213.80-15,308.55-5,280.90

Finding the Fourth Proportional to 10,213.80, 15,308.55 and 5,280.90

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Solution

The fourth proportional to 10,213.80, 15,308.55 and 5,280.90 is: 7,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.80 : 15,308.55 = 5,280.90 : x
  2. Step 2: Convert to fraction form
    10,213.80/15,308.55 = 5,280.90/x
  3. Step 3: Cross multiply
    10,213.80x = 15,308.55 × 5,280.90
  4. Step 4: Simplify right side
    10,213.80x = 80,842,921.70
  5. Step 5: Solve for x
    x = 80,842,921.70/10,213.80
  6. Step 6: Final answer
    x = 7,915.07

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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.