Home / 20,765.26-31,097.67-14,531.50

Finding the Fourth Proportional to 20,765.26, 31,097.67 and 14,531.50

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Solution

The fourth proportional to 20,765.26, 31,097.67 and 14,531.50 is: 21,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.26 : 31,097.67 = 14,531.50 : x
  2. Step 2: Convert to fraction form
    20,765.26/31,097.67 = 14,531.50/x
  3. Step 3: Cross multiply
    20,765.26x = 31,097.67 × 14,531.50
  4. Step 4: Simplify right side
    20,765.26x = 451,895,791.61
  5. Step 5: Solve for x
    x = 451,895,791.61/20,765.26
  6. Step 6: Final answer
    x = 21,762.11

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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.