Home / 15,274.27-21,078.31-8,559.87

Finding the Fourth Proportional to 15,274.27, 21,078.31 and 8,559.87

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Solution

The fourth proportional to 15,274.27, 21,078.31 and 8,559.87 is: 11,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.27 : 21,078.31 = 8,559.87 : x
  2. Step 2: Convert to fraction form
    15,274.27/21,078.31 = 8,559.87/x
  3. Step 3: Cross multiply
    15,274.27x = 21,078.31 × 8,559.87
  4. Step 4: Simplify right side
    15,274.27x = 180,427,550.62
  5. Step 5: Solve for x
    x = 180,427,550.62/15,274.27
  6. Step 6: Final answer
    x = 11,812.52

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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.