Home / 20,170.29-30,256.88-5,379.13

Finding the Fourth Proportional to 20,170.29, 30,256.88 and 5,379.13

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Solution

The fourth proportional to 20,170.29, 30,256.88 and 5,379.13 is: 8,069.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.29 : 30,256.88 = 5,379.13 : x
  2. Step 2: Convert to fraction form
    20,170.29/30,256.88 = 5,379.13/x
  3. Step 3: Cross multiply
    20,170.29x = 30,256.88 × 5,379.13
  4. Step 4: Simplify right side
    20,170.29x = 162,755,690.91
  5. Step 5: Solve for x
    x = 162,755,690.91/20,170.29
  6. Step 6: Final answer
    x = 8,069.08

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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.