Home / 20,751.04-31,126.48-5,168.68

Finding the Fourth Proportional to 20,751.04, 31,126.48 and 5,168.68

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Solution

The fourth proportional to 20,751.04, 31,126.48 and 5,168.68 is: 7,753.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.04 : 31,126.48 = 5,168.68 : x
  2. Step 2: Convert to fraction form
    20,751.04/31,126.48 = 5,168.68/x
  3. Step 3: Cross multiply
    20,751.04x = 31,126.48 × 5,168.68
  4. Step 4: Simplify right side
    20,751.04x = 160,882,814.65
  5. Step 5: Solve for x
    x = 160,882,814.65/20,751.04
  6. Step 6: Final answer
    x = 7,753.00

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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.