Home / 11,277.44-16,919.12-5,120

Finding the Fourth Proportional to 11,277.44, 16,919.12 and 5,120

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Solution

The fourth proportional to 11,277.44, 16,919.12 and 5,120 is: 7,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,277.44 : 16,919.12 = 5,120 : x
  2. Step 2: Convert to fraction form
    11,277.44/16,919.12 = 5,120/x
  3. Step 3: Cross multiply
    11,277.44x = 16,919.12 × 5,120
  4. Step 4: Simplify right side
    11,277.44x = 86,625,894.40
  5. Step 5: Solve for x
    x = 86,625,894.40/11,277.44
  6. Step 6: Final answer
    x = 7,681.34

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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.