Home / 38,535.06-53,179.38-21,538.80

Finding the Fourth Proportional to 38,535.06, 53,179.38 and 21,538.80

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Solution

The fourth proportional to 38,535.06, 53,179.38 and 21,538.80 is: 29,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,535.06 : 53,179.38 = 21,538.80 : x
  2. Step 2: Convert to fraction form
    38,535.06/53,179.38 = 21,538.80/x
  3. Step 3: Cross multiply
    38,535.06x = 53,179.38 × 21,538.80
  4. Step 4: Simplify right side
    38,535.06x = 1,145,420,029.94
  5. Step 5: Solve for x
    x = 1,145,420,029.94/38,535.06
  6. Step 6: Final answer
    x = 29,724.10

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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.