Home / 14,778.20-20,393.78-9,110.68

Finding the Fourth Proportional to 14,778.20, 20,393.78 and 9,110.68

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Solution

The fourth proportional to 14,778.20, 20,393.78 and 9,110.68 is: 12,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.20 : 20,393.78 = 9,110.68 : x
  2. Step 2: Convert to fraction form
    14,778.20/20,393.78 = 9,110.68/x
  3. Step 3: Cross multiply
    14,778.20x = 20,393.78 × 9,110.68
  4. Step 4: Simplify right side
    14,778.20x = 185,801,107.03
  5. Step 5: Solve for x
    x = 185,801,107.03/14,778.20
  6. Step 6: Final answer
    x = 12,572.65

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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.