Home / 29,112.60-43,712.10-20,386.20

Finding the Fourth Proportional to 29,112.60, 43,712.10 and 20,386.20

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Solution

The fourth proportional to 29,112.60, 43,712.10 and 20,386.20 is: 30,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,112.60 : 43,712.10 = 20,386.20 : x
  2. Step 2: Convert to fraction form
    29,112.60/43,712.10 = 20,386.20/x
  3. Step 3: Cross multiply
    29,112.60x = 43,712.10 × 20,386.20
  4. Step 4: Simplify right side
    29,112.60x = 891,123,613.02
  5. Step 5: Solve for x
    x = 891,123,613.02/29,112.60
  6. Step 6: Final answer
    x = 30,609.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.