Home / 25,642.03-38,395.90-20,617.70

Finding the Fourth Proportional to 25,642.03, 38,395.90 and 20,617.70

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Solution

The fourth proportional to 25,642.03, 38,395.90 and 20,617.70 is: 30,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,642.03 : 38,395.90 = 20,617.70 : x
  2. Step 2: Convert to fraction form
    25,642.03/38,395.90 = 20,617.70/x
  3. Step 3: Cross multiply
    25,642.03x = 38,395.90 × 20,617.70
  4. Step 4: Simplify right side
    25,642.03x = 791,635,147.43
  5. Step 5: Solve for x
    x = 791,635,147.43/25,642.03
  6. Step 6: Final answer
    x = 30,872.56

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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.