Home / 15,829.39-21,845.16-8,755.66

Finding the Fourth Proportional to 15,829.39, 21,845.16 and 8,755.66

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Solution

The fourth proportional to 15,829.39, 21,845.16 and 8,755.66 is: 12,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.39 : 21,845.16 = 8,755.66 : x
  2. Step 2: Convert to fraction form
    15,829.39/21,845.16 = 8,755.66/x
  3. Step 3: Cross multiply
    15,829.39x = 21,845.16 × 8,755.66
  4. Step 4: Simplify right side
    15,829.39x = 191,268,793.61
  5. Step 5: Solve for x
    x = 191,268,793.61/15,829.39
  6. Step 6: Final answer
    x = 12,083.14

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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.