Home / 28,781.83-39,723.92-18,177.31

Finding the Fourth Proportional to 28,781.83, 39,723.92 and 18,177.31

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Solution

The fourth proportional to 28,781.83, 39,723.92 and 18,177.31 is: 25,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.83 : 39,723.92 = 18,177.31 : x
  2. Step 2: Convert to fraction form
    28,781.83/39,723.92 = 18,177.31/x
  3. Step 3: Cross multiply
    28,781.83x = 39,723.92 × 18,177.31
  4. Step 4: Simplify right side
    28,781.83x = 722,074,008.26
  5. Step 5: Solve for x
    x = 722,074,008.26/28,781.83
  6. Step 6: Final answer
    x = 25,087.84

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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.