Home / 14,823.80-20,456.70-8,109.44

Finding the Fourth Proportional to 14,823.80, 20,456.70 and 8,109.44

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Solution

The fourth proportional to 14,823.80, 20,456.70 and 8,109.44 is: 11,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,823.80 : 20,456.70 = 8,109.44 : x
  2. Step 2: Convert to fraction form
    14,823.80/20,456.70 = 8,109.44/x
  3. Step 3: Cross multiply
    14,823.80x = 20,456.70 × 8,109.44
  4. Step 4: Simplify right side
    14,823.80x = 165,892,381.25
  5. Step 5: Solve for x
    x = 165,892,381.25/14,823.80
  6. Step 6: Final answer
    x = 11,190.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.