Home / 20,278.17-30,422.03-6,427.17

Finding the Fourth Proportional to 20,278.17, 30,422.03 and 6,427.17

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Solution

The fourth proportional to 20,278.17, 30,422.03 and 6,427.17 is: 9,642.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.17 : 30,422.03 = 6,427.17 : x
  2. Step 2: Convert to fraction form
    20,278.17/30,422.03 = 6,427.17/x
  3. Step 3: Cross multiply
    20,278.17x = 30,422.03 × 6,427.17
  4. Step 4: Simplify right side
    20,278.17x = 195,527,526.42
  5. Step 5: Solve for x
    x = 195,527,526.42/20,278.17
  6. Step 6: Final answer
    x = 9,642.27

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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.