Home / 38,431.45-57,648.94-11,775.53

Finding the Fourth Proportional to 38,431.45, 57,648.94 and 11,775.53

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Solution

The fourth proportional to 38,431.45, 57,648.94 and 11,775.53 is: 17,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.45 : 57,648.94 = 11,775.53 : x
  2. Step 2: Convert to fraction form
    38,431.45/57,648.94 = 11,775.53/x
  3. Step 3: Cross multiply
    38,431.45x = 57,648.94 × 11,775.53
  4. Step 4: Simplify right side
    38,431.45x = 678,846,475.32
  5. Step 5: Solve for x
    x = 678,846,475.32/38,431.45
  6. Step 6: Final answer
    x = 17,663.83

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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.