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Finding the Fourth Proportional to 13,953.30, 20,932.65 and 4,092.90

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Solution

The fourth proportional to 13,953.30, 20,932.65 and 4,092.90 is: 6,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.30 : 20,932.65 = 4,092.90 : x
  2. Step 2: Convert to fraction form
    13,953.30/20,932.65 = 4,092.90/x
  3. Step 3: Cross multiply
    13,953.30x = 20,932.65 × 4,092.90
  4. Step 4: Simplify right side
    13,953.30x = 85,675,243.19
  5. Step 5: Solve for x
    x = 85,675,243.19/13,953.30
  6. Step 6: Final answer
    x = 6,140.14

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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.