Home / 12,420.48-17,147.92-8,546.55

Finding the Fourth Proportional to 12,420.48, 17,147.92 and 8,546.55

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Solution

The fourth proportional to 12,420.48, 17,147.92 and 8,546.55 is: 11,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.48 : 17,147.92 = 8,546.55 : x
  2. Step 2: Convert to fraction form
    12,420.48/17,147.92 = 8,546.55/x
  3. Step 3: Cross multiply
    12,420.48x = 17,147.92 × 8,546.55
  4. Step 4: Simplify right side
    12,420.48x = 146,555,555.68
  5. Step 5: Solve for x
    x = 146,555,555.68/12,420.48
  6. Step 6: Final answer
    x = 11,799.51

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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.