Home / 10,215.14-15,308.33-8,125.88

Finding the Fourth Proportional to 10,215.14, 15,308.33 and 8,125.88

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Solution

The fourth proportional to 10,215.14, 15,308.33 and 8,125.88 is: 12,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.14 : 15,308.33 = 8,125.88 : x
  2. Step 2: Convert to fraction form
    10,215.14/15,308.33 = 8,125.88/x
  3. Step 3: Cross multiply
    10,215.14x = 15,308.33 × 8,125.88
  4. Step 4: Simplify right side
    10,215.14x = 124,393,535.41
  5. Step 5: Solve for x
    x = 124,393,535.41/10,215.14
  6. Step 6: Final answer
    x = 12,177.38

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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.