Home / 13,509.74-20,266.37-5,078.99

Finding the Fourth Proportional to 13,509.74, 20,266.37 and 5,078.99

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Solution

The fourth proportional to 13,509.74, 20,266.37 and 5,078.99 is: 7,619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.74 : 20,266.37 = 5,078.99 : x
  2. Step 2: Convert to fraction form
    13,509.74/20,266.37 = 5,078.99/x
  3. Step 3: Cross multiply
    13,509.74x = 20,266.37 × 5,078.99
  4. Step 4: Simplify right side
    13,509.74x = 102,932,690.57
  5. Step 5: Solve for x
    x = 102,932,690.57/13,509.74
  6. Step 6: Final answer
    x = 7,619.15

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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.