Home / 13,784.40-20,679.12-5,993.28

Finding the Fourth Proportional to 13,784.40, 20,679.12 and 5,993.28

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Solution

The fourth proportional to 13,784.40, 20,679.12 and 5,993.28 is: 8,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.40 : 20,679.12 = 5,993.28 : x
  2. Step 2: Convert to fraction form
    13,784.40/20,679.12 = 5,993.28/x
  3. Step 3: Cross multiply
    13,784.40x = 20,679.12 × 5,993.28
  4. Step 4: Simplify right side
    13,784.40x = 123,935,756.31
  5. Step 5: Solve for x
    x = 123,935,756.31/13,784.40
  6. Step 6: Final answer
    x = 8,991.02

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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.