Home / 12,540.61-18,824.55-9,429.54

Finding the Fourth Proportional to 12,540.61, 18,824.55 and 9,429.54

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Solution

The fourth proportional to 12,540.61, 18,824.55 and 9,429.54 is: 14,154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.61 : 18,824.55 = 9,429.54 : x
  2. Step 2: Convert to fraction form
    12,540.61/18,824.55 = 9,429.54/x
  3. Step 3: Cross multiply
    12,540.61x = 18,824.55 × 9,429.54
  4. Step 4: Simplify right side
    12,540.61x = 177,506,847.21
  5. Step 5: Solve for x
    x = 177,506,847.21/12,540.61
  6. Step 6: Final answer
    x = 14,154.56

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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.