Home / 38,721.43-53,453.28-29,765.80

Finding the Fourth Proportional to 38,721.43, 53,453.28 and 29,765.80

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Solution

The fourth proportional to 38,721.43, 53,453.28 and 29,765.80 is: 41,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.43 : 53,453.28 = 29,765.80 : x
  2. Step 2: Convert to fraction form
    38,721.43/53,453.28 = 29,765.80/x
  3. Step 3: Cross multiply
    38,721.43x = 53,453.28 × 29,765.80
  4. Step 4: Simplify right side
    38,721.43x = 1,591,079,641.82
  5. Step 5: Solve for x
    x = 1,591,079,641.82/38,721.43
  6. Step 6: Final answer
    x = 41,090.42

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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.