Home / 38,285.58-57,428.38-11,992.38

Finding the Fourth Proportional to 38,285.58, 57,428.38 and 11,992.38

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Solution

The fourth proportional to 38,285.58, 57,428.38 and 11,992.38 is: 17,988.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,285.58 : 57,428.38 = 11,992.38 : x
  2. Step 2: Convert to fraction form
    38,285.58/57,428.38 = 11,992.38/x
  3. Step 3: Cross multiply
    38,285.58x = 57,428.38 × 11,992.38
  4. Step 4: Simplify right side
    38,285.58x = 688,702,638.62
  5. Step 5: Solve for x
    x = 688,702,638.62/38,285.58
  6. Step 6: Final answer
    x = 17,988.56

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.