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Finding the Fourth Proportional to 15,179.20, 20,948.88 and 8,803.89

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Solution

The fourth proportional to 15,179.20, 20,948.88 and 8,803.89 is: 12,150.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.20 : 20,948.88 = 8,803.89 : x
  2. Step 2: Convert to fraction form
    15,179.20/20,948.88 = 8,803.89/x
  3. Step 3: Cross multiply
    15,179.20x = 20,948.88 × 8,803.89
  4. Step 4: Simplify right side
    15,179.20x = 184,431,618.64
  5. Step 5: Solve for x
    x = 184,431,618.64/15,179.20
  6. Step 6: Final answer
    x = 12,150.29

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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.