Home / 22,778.15-34,167.45-7,987.42

Finding the Fourth Proportional to 22,778.15, 34,167.45 and 7,987.42

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Solution

The fourth proportional to 22,778.15, 34,167.45 and 7,987.42 is: 11,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,778.15 : 34,167.45 = 7,987.42 : x
  2. Step 2: Convert to fraction form
    22,778.15/34,167.45 = 7,987.42/x
  3. Step 3: Cross multiply
    22,778.15x = 34,167.45 × 7,987.42
  4. Step 4: Simplify right side
    22,778.15x = 272,909,846.14
  5. Step 5: Solve for x
    x = 272,909,846.14/22,778.15
  6. Step 6: Final answer
    x = 11,981.21

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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.