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Finding the Fourth Proportional to 21,706.38, 32,557.48 and 6,912.68

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Solution

The fourth proportional to 21,706.38, 32,557.48 and 6,912.68 is: 10,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.38 : 32,557.48 = 6,912.68 : x
  2. Step 2: Convert to fraction form
    21,706.38/32,557.48 = 6,912.68/x
  3. Step 3: Cross multiply
    21,706.38x = 32,557.48 × 6,912.68
  4. Step 4: Simplify right side
    21,706.38x = 225,059,260.78
  5. Step 5: Solve for x
    x = 225,059,260.78/21,706.38
  6. Step 6: Final answer
    x = 10,368.35

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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.