Home / 38,440.56-57,660.84-21,020.88

Finding the Fourth Proportional to 38,440.56, 57,660.84 and 21,020.88

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Solution

The fourth proportional to 38,440.56, 57,660.84 and 21,020.88 is: 31,531.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,440.56 : 57,660.84 = 21,020.88 : x
  2. Step 2: Convert to fraction form
    38,440.56/57,660.84 = 21,020.88/x
  3. Step 3: Cross multiply
    38,440.56x = 57,660.84 × 21,020.88
  4. Step 4: Simplify right side
    38,440.56x = 1,212,081,598.34
  5. Step 5: Solve for x
    x = 1,212,081,598.34/38,440.56
  6. Step 6: Final answer
    x = 31,531.32

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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.