Home / 20,356.28-30,531.26-7,882.10

Finding the Fourth Proportional to 20,356.28, 30,531.26 and 7,882.10

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Solution

The fourth proportional to 20,356.28, 30,531.26 and 7,882.10 is: 11,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.28 : 30,531.26 = 7,882.10 : x
  2. Step 2: Convert to fraction form
    20,356.28/30,531.26 = 7,882.10/x
  3. Step 3: Cross multiply
    20,356.28x = 30,531.26 × 7,882.10
  4. Step 4: Simplify right side
    20,356.28x = 240,650,444.45
  5. Step 5: Solve for x
    x = 240,650,444.45/20,356.28
  6. Step 6: Final answer
    x = 11,821.93

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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.