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Finding the Fourth Proportional to 16,644.68, 22,938.08 and 11,920.76

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Solution

The fourth proportional to 16,644.68, 22,938.08 and 11,920.76 is: 16,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,644.68 : 22,938.08 = 11,920.76 : x
  2. Step 2: Convert to fraction form
    16,644.68/22,938.08 = 11,920.76/x
  3. Step 3: Cross multiply
    16,644.68x = 22,938.08 × 11,920.76
  4. Step 4: Simplify right side
    16,644.68x = 273,439,346.54
  5. Step 5: Solve for x
    x = 273,439,346.54/16,644.68
  6. Step 6: Final answer
    x = 16,428.03

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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.