Home / 38,761.28-53,489.87-21,765.65

Finding the Fourth Proportional to 38,761.28, 53,489.87 and 21,765.65

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Solution

The fourth proportional to 38,761.28, 53,489.87 and 21,765.65 is: 30,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,761.28 : 53,489.87 = 21,765.65 : x
  2. Step 2: Convert to fraction form
    38,761.28/53,489.87 = 21,765.65/x
  3. Step 3: Cross multiply
    38,761.28x = 53,489.87 × 21,765.65
  4. Step 4: Simplify right side
    38,761.28x = 1,164,241,412.69
  5. Step 5: Solve for x
    x = 1,164,241,412.69/38,761.28
  6. Step 6: Final answer
    x = 30,036.20

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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.