Home / 15,139.52-20,892.60-8,850.68

Finding the Fourth Proportional to 15,139.52, 20,892.60 and 8,850.68

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Solution

The fourth proportional to 15,139.52, 20,892.60 and 8,850.68 is: 12,213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.52 : 20,892.60 = 8,850.68 : x
  2. Step 2: Convert to fraction form
    15,139.52/20,892.60 = 8,850.68/x
  3. Step 3: Cross multiply
    15,139.52x = 20,892.60 × 8,850.68
  4. Step 4: Simplify right side
    15,139.52x = 184,913,716.97
  5. Step 5: Solve for x
    x = 184,913,716.97/15,139.52
  6. Step 6: Final answer
    x = 12,213.97

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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.