Home / 13,660.27-20,490.81-5,339.95

Finding the Fourth Proportional to 13,660.27, 20,490.81 and 5,339.95

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Solution

The fourth proportional to 13,660.27, 20,490.81 and 5,339.95 is: 8,010.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.27 : 20,490.81 = 5,339.95 : x
  2. Step 2: Convert to fraction form
    13,660.27/20,490.81 = 5,339.95/x
  3. Step 3: Cross multiply
    13,660.27x = 20,490.81 × 5,339.95
  4. Step 4: Simplify right side
    13,660.27x = 109,419,900.86
  5. Step 5: Solve for x
    x = 109,419,900.86/13,660.27
  6. Step 6: Final answer
    x = 8,010.08

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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.