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Finding the Fourth Proportional to 12,657.73, 18,975.78 and 8,948.29

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Solution

The fourth proportional to 12,657.73, 18,975.78 and 8,948.29 is: 13,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.73 : 18,975.78 = 8,948.29 : x
  2. Step 2: Convert to fraction form
    12,657.73/18,975.78 = 8,948.29/x
  3. Step 3: Cross multiply
    12,657.73x = 18,975.78 × 8,948.29
  4. Step 4: Simplify right side
    12,657.73x = 169,800,782.42
  5. Step 5: Solve for x
    x = 169,800,782.42/12,657.73
  6. Step 6: Final answer
    x = 13,414.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.