Home / 39,990.38-55,187.14-22,085.84

Finding the Fourth Proportional to 39,990.38, 55,187.14 and 22,085.84

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Solution

The fourth proportional to 39,990.38, 55,187.14 and 22,085.84 is: 30,478.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.38 : 55,187.14 = 22,085.84 : x
  2. Step 2: Convert to fraction form
    39,990.38/55,187.14 = 22,085.84/x
  3. Step 3: Cross multiply
    39,990.38x = 55,187.14 × 22,085.84
  4. Step 4: Simplify right side
    39,990.38x = 1,218,854,344.10
  5. Step 5: Solve for x
    x = 1,218,854,344.10/39,990.38
  6. Step 6: Final answer
    x = 30,478.69

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Double scale
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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.