Home / 12,217.78-18,318.50-4,425.58

Finding the Fourth Proportional to 12,217.78, 18,318.50 and 4,425.58

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Solution

The fourth proportional to 12,217.78, 18,318.50 and 4,425.58 is: 6,635.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.78 : 18,318.50 = 4,425.58 : x
  2. Step 2: Convert to fraction form
    12,217.78/18,318.50 = 4,425.58/x
  3. Step 3: Cross multiply
    12,217.78x = 18,318.50 × 4,425.58
  4. Step 4: Simplify right side
    12,217.78x = 81,069,987.23
  5. Step 5: Solve for x
    x = 81,069,987.23/12,217.78
  6. Step 6: Final answer
    x = 6,635.41

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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.