Home / 13,811.14-20,718.92-5,491.23

Finding the Fourth Proportional to 13,811.14, 20,718.92 and 5,491.23

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Solution

The fourth proportional to 13,811.14, 20,718.92 and 5,491.23 is: 8,237.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.14 : 20,718.92 = 5,491.23 : x
  2. Step 2: Convert to fraction form
    13,811.14/20,718.92 = 5,491.23/x
  3. Step 3: Cross multiply
    13,811.14x = 20,718.92 × 5,491.23
  4. Step 4: Simplify right side
    13,811.14x = 113,772,291.10
  5. Step 5: Solve for x
    x = 113,772,291.10/13,811.14
  6. Step 6: Final answer
    x = 8,237.72

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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.