Home / 20,422.48-30,619.32-7,932.10

Finding the Fourth Proportional to 20,422.48, 30,619.32 and 7,932.10

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Solution

The fourth proportional to 20,422.48, 30,619.32 and 7,932.10 is: 11,892.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.48 : 30,619.32 = 7,932.10 : x
  2. Step 2: Convert to fraction form
    20,422.48/30,619.32 = 7,932.10/x
  3. Step 3: Cross multiply
    20,422.48x = 30,619.32 × 7,932.10
  4. Step 4: Simplify right side
    20,422.48x = 242,875,508.17
  5. Step 5: Solve for x
    x = 242,875,508.17/20,422.48
  6. Step 6: Final answer
    x = 11,892.56

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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.