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Finding the Fourth Proportional to 15,179.75, 20,950.10 and 8,894.63

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Solution

The fourth proportional to 15,179.75, 20,950.10 and 8,894.63 is: 12,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.75 : 20,950.10 = 8,894.63 : x
  2. Step 2: Convert to fraction form
    15,179.75/20,950.10 = 8,894.63/x
  3. Step 3: Cross multiply
    15,179.75x = 20,950.10 × 8,894.63
  4. Step 4: Simplify right side
    15,179.75x = 186,343,387.96
  5. Step 5: Solve for x
    x = 186,343,387.96/15,179.75
  6. Step 6: Final answer
    x = 12,275.79

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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.