Home / 15,139.56-20,892.87-8,425.47

Finding the Fourth Proportional to 15,139.56, 20,892.87 and 8,425.47

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Solution

The fourth proportional to 15,139.56, 20,892.87 and 8,425.47 is: 11,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.56 : 20,892.87 = 8,425.47 : x
  2. Step 2: Convert to fraction form
    15,139.56/20,892.87 = 8,425.47/x
  3. Step 3: Cross multiply
    15,139.56x = 20,892.87 × 8,425.47
  4. Step 4: Simplify right side
    15,139.56x = 176,032,249.40
  5. Step 5: Solve for x
    x = 176,032,249.40/15,139.56
  6. Step 6: Final answer
    x = 11,627.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.