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Finding the Fourth Proportional to 14,674.18, 20,250.31 and 7,959.78

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Solution

The fourth proportional to 14,674.18, 20,250.31 and 7,959.78 is: 10,984.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,674.18 : 20,250.31 = 7,959.78 : x
  2. Step 2: Convert to fraction form
    14,674.18/20,250.31 = 7,959.78/x
  3. Step 3: Cross multiply
    14,674.18x = 20,250.31 × 7,959.78
  4. Step 4: Simplify right side
    14,674.18x = 161,188,012.53
  5. Step 5: Solve for x
    x = 161,188,012.53/14,674.18
  6. Step 6: Final answer
    x = 10,984.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.