Home / 13,347.82-20,022.68-3,987.73

Finding the Fourth Proportional to 13,347.82, 20,022.68 and 3,987.73

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Solution

The fourth proportional to 13,347.82, 20,022.68 and 3,987.73 is: 5,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.82 : 20,022.68 = 3,987.73 : x
  2. Step 2: Convert to fraction form
    13,347.82/20,022.68 = 3,987.73/x
  3. Step 3: Cross multiply
    13,347.82x = 20,022.68 × 3,987.73
  4. Step 4: Simplify right side
    13,347.82x = 79,845,041.72
  5. Step 5: Solve for x
    x = 79,845,041.72/13,347.82
  6. Step 6: Final answer
    x = 5,981.88

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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.