Home / 18,286.25-25,235.03-9,902.75

Finding the Fourth Proportional to 18,286.25, 25,235.03 and 9,902.75

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Solution

The fourth proportional to 18,286.25, 25,235.03 and 9,902.75 is: 13,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.25 : 25,235.03 = 9,902.75 : x
  2. Step 2: Convert to fraction form
    18,286.25/25,235.03 = 9,902.75/x
  3. Step 3: Cross multiply
    18,286.25x = 25,235.03 × 9,902.75
  4. Step 4: Simplify right side
    18,286.25x = 249,896,143.82
  5. Step 5: Solve for x
    x = 249,896,143.82/18,286.25
  6. Step 6: Final answer
    x = 13,665.80

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Half scale
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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.