Home / 18,286.75-25,235.72-9,903.25

Finding the Fourth Proportional to 18,286.75, 25,235.72 and 9,903.25

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Solution

The fourth proportional to 18,286.75, 25,235.72 and 9,903.25 is: 13,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.75 : 25,235.72 = 9,903.25 : x
  2. Step 2: Convert to fraction form
    18,286.75/25,235.72 = 9,903.25/x
  3. Step 3: Cross multiply
    18,286.75x = 25,235.72 × 9,903.25
  4. Step 4: Simplify right side
    18,286.75x = 249,915,644.09
  5. Step 5: Solve for x
    x = 249,915,644.09/18,286.75
  6. Step 6: Final answer
    x = 13,666.49

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Half scale
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Double 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.