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Finding the Fourth Proportional to 13,402.97, 20,104.45 and 4,168.97

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Solution

The fourth proportional to 13,402.97, 20,104.45 and 4,168.97 is: 6,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.97 : 20,104.45 = 4,168.97 : x
  2. Step 2: Convert to fraction form
    13,402.97/20,104.45 = 4,168.97/x
  3. Step 3: Cross multiply
    13,402.97x = 20,104.45 × 4,168.97
  4. Step 4: Simplify right side
    13,402.97x = 83,814,836.81
  5. Step 5: Solve for x
    x = 83,814,836.81/13,402.97
  6. Step 6: Final answer
    x = 6,253.45

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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.