Home / 12,403.12-17,104.56-8,146.70

Finding the Fourth Proportional to 12,403.12, 17,104.56 and 8,146.70

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Solution

The fourth proportional to 12,403.12, 17,104.56 and 8,146.70 is: 11,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.12 : 17,104.56 = 8,146.70 : x
  2. Step 2: Convert to fraction form
    12,403.12/17,104.56 = 8,146.70/x
  3. Step 3: Cross multiply
    12,403.12x = 17,104.56 × 8,146.70
  4. Step 4: Simplify right side
    12,403.12x = 139,345,718.95
  5. Step 5: Solve for x
    x = 139,345,718.95/12,403.12
  6. Step 6: Final answer
    x = 11,234.73

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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.