Home / 19,147.64-26,422-11,079.90

Finding the Fourth Proportional to 19,147.64, 26,422 and 11,079.90

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Solution

The fourth proportional to 19,147.64, 26,422 and 11,079.90 is: 15,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.64 : 26,422 = 11,079.90 : x
  2. Step 2: Convert to fraction form
    19,147.64/26,422 = 11,079.90/x
  3. Step 3: Cross multiply
    19,147.64x = 26,422 × 11,079.90
  4. Step 4: Simplify right side
    19,147.64x = 292,753,117.80
  5. Step 5: Solve for x
    x = 292,753,117.80/19,147.64
  6. Step 6: Final answer
    x = 15,289.25

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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.