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Finding the Fourth Proportional to 16,986.59, 25,479.88 and 5,300.72

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Solution

The fourth proportional to 16,986.59, 25,479.88 and 5,300.72 is: 7,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.59 : 25,479.88 = 5,300.72 : x
  2. Step 2: Convert to fraction form
    16,986.59/25,479.88 = 5,300.72/x
  3. Step 3: Cross multiply
    16,986.59x = 25,479.88 × 5,300.72
  4. Step 4: Simplify right side
    16,986.59x = 135,061,568.86
  5. Step 5: Solve for x
    x = 135,061,568.86/16,986.59
  6. Step 6: Final answer
    x = 7,951.07

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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.