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Finding the Fourth Proportional to 18,673.84, 25,734.42 and 13,359.43

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Solution

The fourth proportional to 18,673.84, 25,734.42 and 13,359.43 is: 18,410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.84 : 25,734.42 = 13,359.43 : x
  2. Step 2: Convert to fraction form
    18,673.84/25,734.42 = 13,359.43/x
  3. Step 3: Cross multiply
    18,673.84x = 25,734.42 × 13,359.43
  4. Step 4: Simplify right side
    18,673.84x = 343,797,182.58
  5. Step 5: Solve for x
    x = 343,797,182.58/18,673.84
  6. Step 6: Final answer
    x = 18,410.63

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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.