Home / 21,380.54-32,071.29-7,340.46

Finding the Fourth Proportional to 21,380.54, 32,071.29 and 7,340.46

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Solution

The fourth proportional to 21,380.54, 32,071.29 and 7,340.46 is: 11,010.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.54 : 32,071.29 = 7,340.46 : x
  2. Step 2: Convert to fraction form
    21,380.54/32,071.29 = 7,340.46/x
  3. Step 3: Cross multiply
    21,380.54x = 32,071.29 × 7,340.46
  4. Step 4: Simplify right side
    21,380.54x = 235,418,021.39
  5. Step 5: Solve for x
    x = 235,418,021.39/21,380.54
  6. Step 6: Final answer
    x = 11,010.85

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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.