Home / 12,190.31-18,281.74-5,170.19

Finding the Fourth Proportional to 12,190.31, 18,281.74 and 5,170.19

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Solution

The fourth proportional to 12,190.31, 18,281.74 and 5,170.19 is: 7,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.31 : 18,281.74 = 5,170.19 : x
  2. Step 2: Convert to fraction form
    12,190.31/18,281.74 = 5,170.19/x
  3. Step 3: Cross multiply
    12,190.31x = 18,281.74 × 5,170.19
  4. Step 4: Simplify right side
    12,190.31x = 94,520,069.33
  5. Step 5: Solve for x
    x = 94,520,069.33/12,190.31
  6. Step 6: Final answer
    x = 7,753.71

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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.