Home / 18,770.38-25,901.37-11,215.21

Finding the Fourth Proportional to 18,770.38, 25,901.37 and 11,215.21

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Solution

The fourth proportional to 18,770.38, 25,901.37 and 11,215.21 is: 15,475.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.38 : 25,901.37 = 11,215.21 : x
  2. Step 2: Convert to fraction form
    18,770.38/25,901.37 = 11,215.21/x
  3. Step 3: Cross multiply
    18,770.38x = 25,901.37 × 11,215.21
  4. Step 4: Simplify right side
    18,770.38x = 290,489,287.65
  5. Step 5: Solve for x
    x = 290,489,287.65/18,770.38
  6. Step 6: Final answer
    x = 15,475.94

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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.