Home / 13,661.27-20,492.31-5,340.95

Finding the Fourth Proportional to 13,661.27, 20,492.31 and 5,340.95

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Solution

The fourth proportional to 13,661.27, 20,492.31 and 5,340.95 is: 8,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.27 : 20,492.31 = 5,340.95 : x
  2. Step 2: Convert to fraction form
    13,661.27/20,492.31 = 5,340.95/x
  3. Step 3: Cross multiply
    13,661.27x = 20,492.31 × 5,340.95
  4. Step 4: Simplify right side
    13,661.27x = 109,448,403.09
  5. Step 5: Solve for x
    x = 109,448,403.09/13,661.27
  6. Step 6: Final answer
    x = 8,011.58

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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.