Home / 20,141.28-30,204.90-8,291.66

Finding the Fourth Proportional to 20,141.28, 30,204.90 and 8,291.66

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Solution

The fourth proportional to 20,141.28, 30,204.90 and 8,291.66 is: 12,434.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.28 : 30,204.90 = 8,291.66 : x
  2. Step 2: Convert to fraction form
    20,141.28/30,204.90 = 8,291.66/x
  3. Step 3: Cross multiply
    20,141.28x = 30,204.90 × 8,291.66
  4. Step 4: Simplify right side
    20,141.28x = 250,448,610.11
  5. Step 5: Solve for x
    x = 250,448,610.11/20,141.28
  6. Step 6: Final answer
    x = 12,434.59

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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.