Home / 38,765.11-53,481.85-21,988.39

Finding the Fourth Proportional to 38,765.11, 53,481.85 and 21,988.39

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Solution

The fourth proportional to 38,765.11, 53,481.85 and 21,988.39 is: 30,336.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,765.11 : 53,481.85 = 21,988.39 : x
  2. Step 2: Convert to fraction form
    38,765.11/53,481.85 = 21,988.39/x
  3. Step 3: Cross multiply
    38,765.11x = 53,481.85 × 21,988.39
  4. Step 4: Simplify right side
    38,765.11x = 1,175,979,775.72
  5. Step 5: Solve for x
    x = 1,175,979,775.72/38,765.11
  6. Step 6: Final answer
    x = 30,336.04

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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.