Home / 13,237.76-18,137.38-13,073.78

Finding the Fourth Proportional to 13,237.76, 18,137.38 and 13,073.78

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Solution

The fourth proportional to 13,237.76, 18,137.38 and 13,073.78 is: 17,912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.76 : 18,137.38 = 13,073.78 : x
  2. Step 2: Convert to fraction form
    13,237.76/18,137.38 = 13,073.78/x
  3. Step 3: Cross multiply
    13,237.76x = 18,137.38 × 13,073.78
  4. Step 4: Simplify right side
    13,237.76x = 237,124,115.90
  5. Step 5: Solve for x
    x = 237,124,115.90/13,237.76
  6. Step 6: Final answer
    x = 17,912.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.