Home / 28,781.91-39,716.19-21,232.31

Finding the Fourth Proportional to 28,781.91, 39,716.19 and 21,232.31

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Solution

The fourth proportional to 28,781.91, 39,716.19 and 21,232.31 is: 29,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.91 : 39,716.19 = 21,232.31 : x
  2. Step 2: Convert to fraction form
    28,781.91/39,716.19 = 21,232.31/x
  3. Step 3: Cross multiply
    28,781.91x = 39,716.19 × 21,232.31
  4. Step 4: Simplify right side
    28,781.91x = 843,266,259.52
  5. Step 5: Solve for x
    x = 843,266,259.52/28,781.91
  6. Step 6: Final answer
    x = 29,298.48

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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.