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Finding the Fourth Proportional to 18,304.99, 25,260.92 and 9,921.49

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Solution

The fourth proportional to 18,304.99, 25,260.92 and 9,921.49 is: 13,691.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,304.99 : 25,260.92 = 9,921.49 : x
  2. Step 2: Convert to fraction form
    18,304.99/25,260.92 = 9,921.49/x
  3. Step 3: Cross multiply
    18,304.99x = 25,260.92 × 9,921.49
  4. Step 4: Simplify right side
    18,304.99x = 250,625,965.17
  5. Step 5: Solve for x
    x = 250,625,965.17/18,304.99
  6. Step 6: Final answer
    x = 13,691.67

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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.