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Finding the Fourth Proportional to 13,959.70, 20,942.52 and 4,098.22

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Solution

The fourth proportional to 13,959.70, 20,942.52 and 4,098.22 is: 6,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.70 : 20,942.52 = 4,098.22 : x
  2. Step 2: Convert to fraction form
    13,959.70/20,942.52 = 4,098.22/x
  3. Step 3: Cross multiply
    13,959.70x = 20,942.52 × 4,098.22
  4. Step 4: Simplify right side
    13,959.70x = 85,827,054.31
  5. Step 5: Solve for x
    x = 85,827,054.31/13,959.70
  6. Step 6: Final answer
    x = 6,148.20

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1.5x scale

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.