Home / 13,211.65-18,231.87-7,243.37

Finding the Fourth Proportional to 13,211.65, 18,231.87 and 7,243.37

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Solution

The fourth proportional to 13,211.65, 18,231.87 and 7,243.37 is: 9,995.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.65 : 18,231.87 = 7,243.37 : x
  2. Step 2: Convert to fraction form
    13,211.65/18,231.87 = 7,243.37/x
  3. Step 3: Cross multiply
    13,211.65x = 18,231.87 × 7,243.37
  4. Step 4: Simplify right side
    13,211.65x = 132,060,180.20
  5. Step 5: Solve for x
    x = 132,060,180.20/13,211.65
  6. Step 6: Final answer
    x = 9,995.74

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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.