Home / 20,914.65-31,375.86-6,875.46

Finding the Fourth Proportional to 20,914.65, 31,375.86 and 6,875.46

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Solution

The fourth proportional to 20,914.65, 31,375.86 and 6,875.46 is: 10,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.65 : 31,375.86 = 6,875.46 : x
  2. Step 2: Convert to fraction form
    20,914.65/31,375.86 = 6,875.46/x
  3. Step 3: Cross multiply
    20,914.65x = 31,375.86 × 6,875.46
  4. Step 4: Simplify right side
    20,914.65x = 215,723,470.40
  5. Step 5: Solve for x
    x = 215,723,470.40/20,914.65
  6. Step 6: Final answer
    x = 10,314.47

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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.