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Finding the Fourth Proportional to 21,679.62, 32,516.04 and 6,886.59

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Solution

The fourth proportional to 21,679.62, 32,516.04 and 6,886.59 is: 10,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.62 : 32,516.04 = 6,886.59 : x
  2. Step 2: Convert to fraction form
    21,679.62/32,516.04 = 6,886.59/x
  3. Step 3: Cross multiply
    21,679.62x = 32,516.04 × 6,886.59
  4. Step 4: Simplify right side
    21,679.62x = 223,924,635.90
  5. Step 5: Solve for x
    x = 223,924,635.90/21,679.62
  6. Step 6: Final answer
    x = 10,328.81

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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.