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Finding the Fourth Proportional to 13,959.72, 20,941.02 and 4,098.96

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Solution

The fourth proportional to 13,959.72, 20,941.02 and 4,098.96 is: 6,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.72 : 20,941.02 = 4,098.96 : x
  2. Step 2: Convert to fraction form
    13,959.72/20,941.02 = 4,098.96/x
  3. Step 3: Cross multiply
    13,959.72x = 20,941.02 × 4,098.96
  4. Step 4: Simplify right side
    13,959.72x = 85,836,403.34
  5. Step 5: Solve for x
    x = 85,836,403.34/13,959.72
  6. Step 6: Final answer
    x = 6,148.86

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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.