Home / 18,947.25-26,149.46-11,397.47

Finding the Fourth Proportional to 18,947.25, 26,149.46 and 11,397.47

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Solution

The fourth proportional to 18,947.25, 26,149.46 and 11,397.47 is: 15,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.25 : 26,149.46 = 11,397.47 : x
  2. Step 2: Convert to fraction form
    18,947.25/26,149.46 = 11,397.47/x
  3. Step 3: Cross multiply
    18,947.25x = 26,149.46 × 11,397.47
  4. Step 4: Simplify right side
    18,947.25x = 298,037,498.13
  5. Step 5: Solve for x
    x = 298,037,498.13/18,947.25
  6. Step 6: Final answer
    x = 15,729.86

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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.