Home / 38,724.55-53,439.90-21,726.44

Finding the Fourth Proportional to 38,724.55, 53,439.90 and 21,726.44

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Solution

The fourth proportional to 38,724.55, 53,439.90 and 21,726.44 is: 29,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,724.55 : 53,439.90 = 21,726.44 : x
  2. Step 2: Convert to fraction form
    38,724.55/53,439.90 = 21,726.44/x
  3. Step 3: Cross multiply
    38,724.55x = 53,439.90 × 21,726.44
  4. Step 4: Simplify right side
    38,724.55x = 1,161,059,055.49
  5. Step 5: Solve for x
    x = 1,161,059,055.49/38,724.55
  6. Step 6: Final answer
    x = 29,982.51

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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.