Home / 20,798.06-31,196.61-8,959.70

Finding the Fourth Proportional to 20,798.06, 31,196.61 and 8,959.70

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Solution

The fourth proportional to 20,798.06, 31,196.61 and 8,959.70 is: 13,439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.06 : 31,196.61 = 8,959.70 : x
  2. Step 2: Convert to fraction form
    20,798.06/31,196.61 = 8,959.70/x
  3. Step 3: Cross multiply
    20,798.06x = 31,196.61 × 8,959.70
  4. Step 4: Simplify right side
    20,798.06x = 279,512,110.63
  5. Step 5: Solve for x
    x = 279,512,110.63/20,798.06
  6. Step 6: Final answer
    x = 13,439.34

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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.