Home / 12,642.15-18,958.26-3,755.10

Finding the Fourth Proportional to 12,642.15, 18,958.26 and 3,755.10

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Solution

The fourth proportional to 12,642.15, 18,958.26 and 3,755.10 is: 5,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.15 : 18,958.26 = 3,755.10 : x
  2. Step 2: Convert to fraction form
    12,642.15/18,958.26 = 3,755.10/x
  3. Step 3: Cross multiply
    12,642.15x = 18,958.26 × 3,755.10
  4. Step 4: Simplify right side
    12,642.15x = 71,190,162.13
  5. Step 5: Solve for x
    x = 71,190,162.13/12,642.15
  6. Step 6: Final answer
    x = 5,631.18

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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.