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Finding the Fourth Proportional to 15,179.35, 20,946.96 and 8,464.87

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Solution

The fourth proportional to 15,179.35, 20,946.96 and 8,464.87 is: 11,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.35 : 20,946.96 = 8,464.87 : x
  2. Step 2: Convert to fraction form
    15,179.35/20,946.96 = 8,464.87/x
  3. Step 3: Cross multiply
    15,179.35x = 20,946.96 × 8,464.87
  4. Step 4: Simplify right side
    15,179.35x = 177,313,293.30
  5. Step 5: Solve for x
    x = 177,313,293.30/15,179.35
  6. Step 6: Final answer
    x = 11,681.22

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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.