Home / 20,849.06-31,279.43-8,377.84

Finding the Fourth Proportional to 20,849.06, 31,279.43 and 8,377.84

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Solution

The fourth proportional to 20,849.06, 31,279.43 and 8,377.84 is: 12,569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.06 : 31,279.43 = 8,377.84 : x
  2. Step 2: Convert to fraction form
    20,849.06/31,279.43 = 8,377.84/x
  3. Step 3: Cross multiply
    20,849.06x = 31,279.43 × 8,377.84
  4. Step 4: Simplify right side
    20,849.06x = 262,054,002.58
  5. Step 5: Solve for x
    x = 262,054,002.58/20,849.06
  6. Step 6: Final answer
    x = 12,569.11

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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.