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Finding the Fourth Proportional to 10,061.64, 13,890.06 and 6,286.90

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Solution

The fourth proportional to 10,061.64, 13,890.06 and 6,286.90 is: 8,679.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,061.64 : 13,890.06 = 6,286.90 : x
  2. Step 2: Convert to fraction form
    10,061.64/13,890.06 = 6,286.90/x
  3. Step 3: Cross multiply
    10,061.64x = 13,890.06 × 6,286.90
  4. Step 4: Simplify right side
    10,061.64x = 87,325,383.49
  5. Step 5: Solve for x
    x = 87,325,383.49/10,061.64
  6. Step 6: Final answer
    x = 8,679.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.