Home / 13,987.23-20,980.85-3,599.79

Finding the Fourth Proportional to 13,987.23, 20,980.85 and 3,599.79

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Solution

The fourth proportional to 13,987.23, 20,980.85 and 3,599.79 is: 5,399.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.23 : 20,980.85 = 3,599.79 : x
  2. Step 2: Convert to fraction form
    13,987.23/20,980.85 = 3,599.79/x
  3. Step 3: Cross multiply
    13,987.23x = 20,980.85 × 3,599.79
  4. Step 4: Simplify right side
    13,987.23x = 75,526,636.02
  5. Step 5: Solve for x
    x = 75,526,636.02/13,987.23
  6. Step 6: Final answer
    x = 5,399.69

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Similar ratio
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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.