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Finding the Fourth Proportional to 13,402.11, 18,494.79 and 7,433.79

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Solution

The fourth proportional to 13,402.11, 18,494.79 and 7,433.79 is: 10,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.11 : 18,494.79 = 7,433.79 : x
  2. Step 2: Convert to fraction form
    13,402.11/18,494.79 = 7,433.79/x
  3. Step 3: Cross multiply
    13,402.11x = 18,494.79 × 7,433.79
  4. Step 4: Simplify right side
    13,402.11x = 137,486,384.95
  5. Step 5: Solve for x
    x = 137,486,384.95/13,402.11
  6. Step 6: Final answer
    x = 10,258.56

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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.