Home / 13,211.43-18,227.10-7,542.09

Finding the Fourth Proportional to 13,211.43, 18,227.10 and 7,542.09

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Solution

The fourth proportional to 13,211.43, 18,227.10 and 7,542.09 is: 10,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.43 : 18,227.10 = 7,542.09 : x
  2. Step 2: Convert to fraction form
    13,211.43/18,227.10 = 7,542.09/x
  3. Step 3: Cross multiply
    13,211.43x = 18,227.10 × 7,542.09
  4. Step 4: Simplify right side
    13,211.43x = 137,470,428.64
  5. Step 5: Solve for x
    x = 137,470,428.64/13,211.43
  6. Step 6: Final answer
    x = 10,405.42

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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.