Home / 13,222.47-18,246.96-8,185.70

Finding the Fourth Proportional to 13,222.47, 18,246.96 and 8,185.70

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Solution

The fourth proportional to 13,222.47, 18,246.96 and 8,185.70 is: 11,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.47 : 18,246.96 = 8,185.70 : x
  2. Step 2: Convert to fraction form
    13,222.47/18,246.96 = 8,185.70/x
  3. Step 3: Cross multiply
    13,222.47x = 18,246.96 × 8,185.70
  4. Step 4: Simplify right side
    13,222.47x = 149,364,049.24
  5. Step 5: Solve for x
    x = 149,364,049.24/13,222.47
  6. Step 6: Final answer
    x = 11,296.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.