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Finding the Fourth Proportional to 18,298.11, 25,250.72 and 9,914.43

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Solution

The fourth proportional to 18,298.11, 25,250.72 and 9,914.43 is: 13,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.11 : 25,250.72 = 9,914.43 : x
  2. Step 2: Convert to fraction form
    18,298.11/25,250.72 = 9,914.43/x
  3. Step 3: Cross multiply
    18,298.11x = 25,250.72 × 9,914.43
  4. Step 4: Simplify right side
    18,298.11x = 250,346,446.32
  5. Step 5: Solve for x
    x = 250,346,446.32/18,298.11
  6. Step 6: Final answer
    x = 13,681.55

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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.