Home / 20,535.66-30,747.78-10,654.20

Finding the Fourth Proportional to 20,535.66, 30,747.78 and 10,654.20

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Solution

The fourth proportional to 20,535.66, 30,747.78 and 10,654.20 is: 15,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.66 : 30,747.78 = 10,654.20 : x
  2. Step 2: Convert to fraction form
    20,535.66/30,747.78 = 10,654.20/x
  3. Step 3: Cross multiply
    20,535.66x = 30,747.78 × 10,654.20
  4. Step 4: Simplify right side
    20,535.66x = 327,592,997.68
  5. Step 5: Solve for x
    x = 327,592,997.68/20,535.66
  6. Step 6: Final answer
    x = 15,952.40

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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.