Home / 13,825.35-20,738-3,437.10

Finding the Fourth Proportional to 13,825.35, 20,738 and 3,437.10

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Solution

The fourth proportional to 13,825.35, 20,738 and 3,437.10 is: 5,155.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.35 : 20,738 = 3,437.10 : x
  2. Step 2: Convert to fraction form
    13,825.35/20,738 = 3,437.10/x
  3. Step 3: Cross multiply
    13,825.35x = 20,738 × 3,437.10
  4. Step 4: Simplify right side
    13,825.35x = 71,278,579.80
  5. Step 5: Solve for x
    x = 71,278,579.80/13,825.35
  6. Step 6: Final answer
    x = 5,155.64

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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.