Home / 20,519.93-28,317.75-11,567.44

Finding the Fourth Proportional to 20,519.93, 28,317.75 and 11,567.44

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Solution

The fourth proportional to 20,519.93, 28,317.75 and 11,567.44 is: 15,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.93 : 28,317.75 = 11,567.44 : x
  2. Step 2: Convert to fraction form
    20,519.93/28,317.75 = 11,567.44/x
  3. Step 3: Cross multiply
    20,519.93x = 28,317.75 × 11,567.44
  4. Step 4: Simplify right side
    20,519.93x = 327,563,732.47
  5. Step 5: Solve for x
    x = 327,563,732.47/20,519.93
  6. Step 6: Final answer
    x = 15,963.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.