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Finding the Fourth Proportional to 12,331.80, 18,500.40 and 4,010.40

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Solution

The fourth proportional to 12,331.80, 18,500.40 and 4,010.40 is: 6,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.80 : 18,500.40 = 4,010.40 : x
  2. Step 2: Convert to fraction form
    12,331.80/18,500.40 = 4,010.40/x
  3. Step 3: Cross multiply
    12,331.80x = 18,500.40 × 4,010.40
  4. Step 4: Simplify right side
    12,331.80x = 74,194,004.16
  5. Step 5: Solve for x
    x = 74,194,004.16/12,331.80
  6. Step 6: Final answer
    x = 6,016.48

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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.