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Finding the Fourth Proportional to 15,179.01, 20,947.04 and 8,891.39

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Solution

The fourth proportional to 15,179.01, 20,947.04 and 8,891.39 is: 12,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.01 : 20,947.04 = 8,891.39 : x
  2. Step 2: Convert to fraction form
    15,179.01/20,947.04 = 8,891.39/x
  3. Step 3: Cross multiply
    15,179.01x = 20,947.04 × 8,891.39
  4. Step 4: Simplify right side
    15,179.01x = 186,248,152.79
  5. Step 5: Solve for x
    x = 186,248,152.79/15,179.01
  6. Step 6: Final answer
    x = 12,270.11

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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.