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Finding the Fourth Proportional to 11,153.25, 16,738.02 and 8,988.12

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Solution

The fourth proportional to 11,153.25, 16,738.02 and 8,988.12 is: 13,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.25 : 16,738.02 = 8,988.12 : x
  2. Step 2: Convert to fraction form
    11,153.25/16,738.02 = 8,988.12/x
  3. Step 3: Cross multiply
    11,153.25x = 16,738.02 × 8,988.12
  4. Step 4: Simplify right side
    11,153.25x = 150,443,332.32
  5. Step 5: Solve for x
    x = 150,443,332.32/11,153.25
  6. Step 6: Final answer
    x = 13,488.74

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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.