Home / 12,781.58-19,168.85-8,094.56

Finding the Fourth Proportional to 12,781.58, 19,168.85 and 8,094.56

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Solution

The fourth proportional to 12,781.58, 19,168.85 and 8,094.56 is: 12,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.58 : 19,168.85 = 8,094.56 : x
  2. Step 2: Convert to fraction form
    12,781.58/19,168.85 = 8,094.56/x
  3. Step 3: Cross multiply
    12,781.58x = 19,168.85 × 8,094.56
  4. Step 4: Simplify right side
    12,781.58x = 155,163,330.85
  5. Step 5: Solve for x
    x = 155,163,330.85/12,781.58
  6. Step 6: Final answer
    x = 12,139.61

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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.