Home / 13,781.36-20,680.32-5,016.08

Finding the Fourth Proportional to 13,781.36, 20,680.32 and 5,016.08

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Solution

The fourth proportional to 13,781.36, 20,680.32 and 5,016.08 is: 7,527.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.36 : 20,680.32 = 5,016.08 : x
  2. Step 2: Convert to fraction form
    13,781.36/20,680.32 = 5,016.08/x
  3. Step 3: Cross multiply
    13,781.36x = 20,680.32 × 5,016.08
  4. Step 4: Simplify right side
    13,781.36x = 103,734,139.55
  5. Step 5: Solve for x
    x = 103,734,139.55/13,781.36
  6. Step 6: Final answer
    x = 7,527.13

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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.