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Finding the Fourth Proportional to 8,981.03, 13,376.68 and 8,512.65

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Solution

The fourth proportional to 8,981.03, 13,376.68 and 8,512.65 is: 12,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.03 : 13,376.68 = 8,512.65 : x
  2. Step 2: Convert to fraction form
    8,981.03/13,376.68 = 8,512.65/x
  3. Step 3: Cross multiply
    8,981.03x = 13,376.68 × 8,512.65
  4. Step 4: Simplify right side
    8,981.03x = 113,870,995.00
  5. Step 5: Solve for x
    x = 113,870,995.00/8,981.03
  6. Step 6: Final answer
    x = 12,679.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.