Home / 20,214.18-30,321.27-5,422.77

Finding the Fourth Proportional to 20,214.18, 30,321.27 and 5,422.77

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Solution

The fourth proportional to 20,214.18, 30,321.27 and 5,422.77 is: 8,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.18 : 30,321.27 = 5,422.77 : x
  2. Step 2: Convert to fraction form
    20,214.18/30,321.27 = 5,422.77/x
  3. Step 3: Cross multiply
    20,214.18x = 30,321.27 × 5,422.77
  4. Step 4: Simplify right side
    20,214.18x = 164,425,273.32
  5. Step 5: Solve for x
    x = 164,425,273.32/20,214.18
  6. Step 6: Final answer
    x = 8,134.16

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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.