Home / 26,291.39-39,387.87-20,419.29

Finding the Fourth Proportional to 26,291.39, 39,387.87 and 20,419.29

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Solution

The fourth proportional to 26,291.39, 39,387.87 and 20,419.29 is: 30,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,291.39 : 39,387.87 = 20,419.29 : x
  2. Step 2: Convert to fraction form
    26,291.39/39,387.87 = 20,419.29/x
  3. Step 3: Cross multiply
    26,291.39x = 39,387.87 × 20,419.29
  4. Step 4: Simplify right side
    26,291.39x = 804,272,340.01
  5. Step 5: Solve for x
    x = 804,272,340.01/26,291.39
  6. Step 6: Final answer
    x = 30,590.72

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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.