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Finding the Fourth Proportional to 9,981.32, 14,896.08 and 8,874.16

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Solution

The fourth proportional to 9,981.32, 14,896.08 and 8,874.16 is: 13,243.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.32 : 14,896.08 = 8,874.16 : x
  2. Step 2: Convert to fraction form
    9,981.32/14,896.08 = 8,874.16/x
  3. Step 3: Cross multiply
    9,981.32x = 14,896.08 × 8,874.16
  4. Step 4: Simplify right side
    9,981.32x = 132,190,160.05
  5. Step 5: Solve for x
    x = 132,190,160.05/9,981.32
  6. Step 6: Final answer
    x = 13,243.76

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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.