Home / 21,957.60-32,940.49-7,170.72

Finding the Fourth Proportional to 21,957.60, 32,940.49 and 7,170.72

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Solution

The fourth proportional to 21,957.60, 32,940.49 and 7,170.72 is: 10,757.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.60 : 32,940.49 = 7,170.72 : x
  2. Step 2: Convert to fraction form
    21,957.60/32,940.49 = 7,170.72/x
  3. Step 3: Cross multiply
    21,957.60x = 32,940.49 × 7,170.72
  4. Step 4: Simplify right side
    21,957.60x = 236,207,030.45
  5. Step 5: Solve for x
    x = 236,207,030.45/21,957.60
  6. Step 6: Final answer
    x = 10,757.42

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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.