Home / 38,608.21-57,911.70-12,312.78

Finding the Fourth Proportional to 38,608.21, 57,911.70 and 12,312.78

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Solution

The fourth proportional to 38,608.21, 57,911.70 and 12,312.78 is: 18,468.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,608.21 : 57,911.70 = 12,312.78 : x
  2. Step 2: Convert to fraction form
    38,608.21/57,911.70 = 12,312.78/x
  3. Step 3: Cross multiply
    38,608.21x = 57,911.70 × 12,312.78
  4. Step 4: Simplify right side
    38,608.21x = 713,053,850.53
  5. Step 5: Solve for x
    x = 713,053,850.53/38,608.21
  6. Step 6: Final answer
    x = 18,468.97

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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.