Home / 38,138.45-52,631.17-21,145.46

Finding the Fourth Proportional to 38,138.45, 52,631.17 and 21,145.46

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Solution

The fourth proportional to 38,138.45, 52,631.17 and 21,145.46 is: 29,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.45 : 52,631.17 = 21,145.46 : x
  2. Step 2: Convert to fraction form
    38,138.45/52,631.17 = 21,145.46/x
  3. Step 3: Cross multiply
    38,138.45x = 52,631.17 × 21,145.46
  4. Step 4: Simplify right side
    38,138.45x = 1,112,909,983.97
  5. Step 5: Solve for x
    x = 1,112,909,983.97/38,138.45
  6. Step 6: Final answer
    x = 29,180.79

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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.