Home / 25,825.86-38,729.07-20,343.78

Finding the Fourth Proportional to 25,825.86, 38,729.07 and 20,343.78

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Solution

The fourth proportional to 25,825.86, 38,729.07 and 20,343.78 is: 30,508.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,825.86 : 38,729.07 = 20,343.78 : x
  2. Step 2: Convert to fraction form
    25,825.86/38,729.07 = 20,343.78/x
  3. Step 3: Cross multiply
    25,825.86x = 38,729.07 × 20,343.78
  4. Step 4: Simplify right side
    25,825.86x = 787,895,679.68
  5. Step 5: Solve for x
    x = 787,895,679.68/25,825.86
  6. Step 6: Final answer
    x = 30,508.01

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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.