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Finding the Fourth Proportional to 16,879.68, 25,334.85 and 8,988.81

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Solution

The fourth proportional to 16,879.68, 25,334.85 and 8,988.81 is: 13,491.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.68 : 25,334.85 = 8,988.81 : x
  2. Step 2: Convert to fraction form
    16,879.68/25,334.85 = 8,988.81/x
  3. Step 3: Cross multiply
    16,879.68x = 25,334.85 × 8,988.81
  4. Step 4: Simplify right side
    16,879.68x = 227,730,153.03
  5. Step 5: Solve for x
    x = 227,730,153.03/16,879.68
  6. Step 6: Final answer
    x = 13,491.38

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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.