Home / 38,505.40-57,777.30-21,878.20

Finding the Fourth Proportional to 38,505.40, 57,777.30 and 21,878.20

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Solution

The fourth proportional to 38,505.40, 57,777.30 and 21,878.20 is: 32,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,505.40 : 57,777.30 = 21,878.20 : x
  2. Step 2: Convert to fraction form
    38,505.40/57,777.30 = 21,878.20/x
  3. Step 3: Cross multiply
    38,505.40x = 57,777.30 × 21,878.20
  4. Step 4: Simplify right side
    38,505.40x = 1,264,063,324.86
  5. Step 5: Solve for x
    x = 1,264,063,324.86/38,505.40
  6. Step 6: Final answer
    x = 32,828.21

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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.