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Finding the Fourth Proportional to 12,711.87, 19,068.09 and 8,948.27

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Solution

The fourth proportional to 12,711.87, 19,068.09 and 8,948.27 is: 13,422.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.87 : 19,068.09 = 8,948.27 : x
  2. Step 2: Convert to fraction form
    12,711.87/19,068.09 = 8,948.27/x
  3. Step 3: Cross multiply
    12,711.87x = 19,068.09 × 8,948.27
  4. Step 4: Simplify right side
    12,711.87x = 170,626,431.82
  5. Step 5: Solve for x
    x = 170,626,431.82/12,711.87
  6. Step 6: Final answer
    x = 13,422.61

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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.