Home / 20,849.92-31,279.84-6,810.05

Finding the Fourth Proportional to 20,849.92, 31,279.84 and 6,810.05

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Solution

The fourth proportional to 20,849.92, 31,279.84 and 6,810.05 is: 10,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.92 : 31,279.84 = 6,810.05 : x
  2. Step 2: Convert to fraction form
    20,849.92/31,279.84 = 6,810.05/x
  3. Step 3: Cross multiply
    20,849.92x = 31,279.84 × 6,810.05
  4. Step 4: Simplify right side
    20,849.92x = 213,017,335.57
  5. Step 5: Solve for x
    x = 213,017,335.57/20,849.92
  6. Step 6: Final answer
    x = 10,216.70

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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.