Home / 20,702.92-31,034.22-8,218.84

Finding the Fourth Proportional to 20,702.92, 31,034.22 and 8,218.84

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Solution

The fourth proportional to 20,702.92, 31,034.22 and 8,218.84 is: 12,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.92 : 31,034.22 = 8,218.84 : x
  2. Step 2: Convert to fraction form
    20,702.92/31,034.22 = 8,218.84/x
  3. Step 3: Cross multiply
    20,702.92x = 31,034.22 × 8,218.84
  4. Step 4: Simplify right side
    20,702.92x = 255,065,288.70
  5. Step 5: Solve for x
    x = 255,065,288.70/20,702.92
  6. Step 6: Final answer
    x = 12,320.26

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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.