Home / 39,691.08-54,773.48-21,786.39

Finding the Fourth Proportional to 39,691.08, 54,773.48 and 21,786.39

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Solution

The fourth proportional to 39,691.08, 54,773.48 and 21,786.39 is: 30,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,691.08 : 54,773.48 = 21,786.39 : x
  2. Step 2: Convert to fraction form
    39,691.08/54,773.48 = 21,786.39/x
  3. Step 3: Cross multiply
    39,691.08x = 54,773.48 × 21,786.39
  4. Step 4: Simplify right side
    39,691.08x = 1,193,316,451.40
  5. Step 5: Solve for x
    x = 1,193,316,451.40/39,691.08
  6. Step 6: Final answer
    x = 30,065.10

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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.