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Finding the Fourth Proportional to 12,446.76, 18,673.78 and 3,681.90

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Solution

The fourth proportional to 12,446.76, 18,673.78 and 3,681.90 is: 5,523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,446.76 : 18,673.78 = 3,681.90 : x
  2. Step 2: Convert to fraction form
    12,446.76/18,673.78 = 3,681.90/x
  3. Step 3: Cross multiply
    12,446.76x = 18,673.78 × 3,681.90
  4. Step 4: Simplify right side
    12,446.76x = 68,754,990.58
  5. Step 5: Solve for x
    x = 68,754,990.58/12,446.76
  6. Step 6: Final answer
    x = 5,523.93

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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.