Home / 26,139.60-39,229.13-12,109.47

Finding the Fourth Proportional to 26,139.60, 39,229.13 and 12,109.47

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Solution

The fourth proportional to 26,139.60, 39,229.13 and 12,109.47 is: 18,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,139.60 : 39,229.13 = 12,109.47 : x
  2. Step 2: Convert to fraction form
    26,139.60/39,229.13 = 12,109.47/x
  3. Step 3: Cross multiply
    26,139.60x = 39,229.13 × 12,109.47
  4. Step 4: Simplify right side
    26,139.60x = 475,043,912.31
  5. Step 5: Solve for x
    x = 475,043,912.31/26,139.60
  6. Step 6: Final answer
    x = 18,173.34

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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.