Home / 20,917.45-31,348.49-15,344.70

Finding the Fourth Proportional to 20,917.45, 31,348.49 and 15,344.70

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Solution

The fourth proportional to 20,917.45, 31,348.49 and 15,344.70 is: 22,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.45 : 31,348.49 = 15,344.70 : x
  2. Step 2: Convert to fraction form
    20,917.45/31,348.49 = 15,344.70/x
  3. Step 3: Cross multiply
    20,917.45x = 31,348.49 × 15,344.70
  4. Step 4: Simplify right side
    20,917.45x = 481,033,017.76
  5. Step 5: Solve for x
    x = 481,033,017.76/20,917.45
  6. Step 6: Final answer
    x = 22,996.74

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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.