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Finding the Fourth Proportional to 41,980.60, 62,979.20 and 11,995.11

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Solution

The fourth proportional to 41,980.60, 62,979.20 and 11,995.11 is: 17,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,980.60 : 62,979.20 = 11,995.11 : x
  2. Step 2: Convert to fraction form
    41,980.60/62,979.20 = 11,995.11/x
  3. Step 3: Cross multiply
    41,980.60x = 62,979.20 × 11,995.11
  4. Step 4: Simplify right side
    41,980.60x = 755,442,237.48
  5. Step 5: Solve for x
    x = 755,442,237.48/41,980.60
  6. Step 6: Final answer
    x = 17,995.03

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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.