Home / 38,691.90-53,390.79-22,775.40

Finding the Fourth Proportional to 38,691.90, 53,390.79 and 22,775.40

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Solution

The fourth proportional to 38,691.90, 53,390.79 and 22,775.40 is: 31,427.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,691.90 : 53,390.79 = 22,775.40 : x
  2. Step 2: Convert to fraction form
    38,691.90/53,390.79 = 22,775.40/x
  3. Step 3: Cross multiply
    38,691.90x = 53,390.79 × 22,775.40
  4. Step 4: Simplify right side
    38,691.90x = 1,215,996,598.57
  5. Step 5: Solve for x
    x = 1,215,996,598.57/38,691.90
  6. Step 6: Final answer
    x = 31,427.68

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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.