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Finding the Fourth Proportional to 21,630.81, 32,446.01 and 6,839.73

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Solution

The fourth proportional to 21,630.81, 32,446.01 and 6,839.73 is: 10,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.81 : 32,446.01 = 6,839.73 : x
  2. Step 2: Convert to fraction form
    21,630.81/32,446.01 = 6,839.73/x
  3. Step 3: Cross multiply
    21,630.81x = 32,446.01 × 6,839.73
  4. Step 4: Simplify right side
    21,630.81x = 221,921,947.98
  5. Step 5: Solve for x
    x = 221,921,947.98/21,630.81
  6. Step 6: Final answer
    x = 10,259.53

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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.