Home / 13,937.20-20,930.10-13,499.80

Finding the Fourth Proportional to 13,937.20, 20,930.10 and 13,499.80

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Solution

The fourth proportional to 13,937.20, 20,930.10 and 13,499.80 is: 20,273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.20 : 20,930.10 = 13,499.80 : x
  2. Step 2: Convert to fraction form
    13,937.20/20,930.10 = 13,499.80/x
  3. Step 3: Cross multiply
    13,937.20x = 20,930.10 × 13,499.80
  4. Step 4: Simplify right side
    13,937.20x = 282,552,163.98
  5. Step 5: Solve for x
    x = 282,552,163.98/13,937.20
  6. Step 6: Final answer
    x = 20,273.24

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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.