Home / 20,751.90-31,127.88-5,957.38

Finding the Fourth Proportional to 20,751.90, 31,127.88 and 5,957.38

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Solution

The fourth proportional to 20,751.90, 31,127.88 and 5,957.38 is: 8,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.90 : 31,127.88 = 5,957.38 : x
  2. Step 2: Convert to fraction form
    20,751.90/31,127.88 = 5,957.38/x
  3. Step 3: Cross multiply
    20,751.90x = 31,127.88 × 5,957.38
  4. Step 4: Simplify right side
    20,751.90x = 185,440,609.75
  5. Step 5: Solve for x
    x = 185,440,609.75/20,751.90
  6. Step 6: Final answer
    x = 8,936.08

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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.