Home / 14,781.42-20,396.97-8,811.90

Finding the Fourth Proportional to 14,781.42, 20,396.97 and 8,811.90

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Solution

The fourth proportional to 14,781.42, 20,396.97 and 8,811.90 is: 12,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.42 : 20,396.97 = 8,811.90 : x
  2. Step 2: Convert to fraction form
    14,781.42/20,396.97 = 8,811.90/x
  3. Step 3: Cross multiply
    14,781.42x = 20,396.97 × 8,811.90
  4. Step 4: Simplify right side
    14,781.42x = 179,736,059.94
  5. Step 5: Solve for x
    x = 179,736,059.94/14,781.42
  6. Step 6: Final answer
    x = 12,159.59

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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.