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Finding the Fourth Proportional to 16,639.88, 24,947.49 and 7,864.55

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Solution

The fourth proportional to 16,639.88, 24,947.49 and 7,864.55 is: 11,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.88 : 24,947.49 = 7,864.55 : x
  2. Step 2: Convert to fraction form
    16,639.88/24,947.49 = 7,864.55/x
  3. Step 3: Cross multiply
    16,639.88x = 24,947.49 × 7,864.55
  4. Step 4: Simplify right side
    16,639.88x = 196,200,657.74
  5. Step 5: Solve for x
    x = 196,200,657.74/16,639.88
  6. Step 6: Final answer
    x = 11,790.99

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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.