Home / 10,813.51-16,218.87-3,418.72

Finding the Fourth Proportional to 10,813.51, 16,218.87 and 3,418.72

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Solution

The fourth proportional to 10,813.51, 16,218.87 and 3,418.72 is: 5,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,813.51 : 16,218.87 = 3,418.72 : x
  2. Step 2: Convert to fraction form
    10,813.51/16,218.87 = 3,418.72/x
  3. Step 3: Cross multiply
    10,813.51x = 16,218.87 × 3,418.72
  4. Step 4: Simplify right side
    10,813.51x = 55,447,775.25
  5. Step 5: Solve for x
    x = 55,447,775.25/10,813.51
  6. Step 6: Final answer
    x = 5,127.64

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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.