Home / 39,235.70-54,145.32-21,330.92

Finding the Fourth Proportional to 39,235.70, 54,145.32 and 21,330.92

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Solution

The fourth proportional to 39,235.70, 54,145.32 and 21,330.92 is: 29,436.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.70 : 54,145.32 = 21,330.92 : x
  2. Step 2: Convert to fraction form
    39,235.70/54,145.32 = 21,330.92/x
  3. Step 3: Cross multiply
    39,235.70x = 54,145.32 × 21,330.92
  4. Step 4: Simplify right side
    39,235.70x = 1,154,969,489.29
  5. Step 5: Solve for x
    x = 1,154,969,489.29/39,235.70
  6. Step 6: Final answer
    x = 29,436.70

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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.