Home / 13,115.24-19,676.51-5,720.35

Finding the Fourth Proportional to 13,115.24, 19,676.51 and 5,720.35

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Solution

The fourth proportional to 13,115.24, 19,676.51 and 5,720.35 is: 8,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.24 : 19,676.51 = 5,720.35 : x
  2. Step 2: Convert to fraction form
    13,115.24/19,676.51 = 5,720.35/x
  3. Step 3: Cross multiply
    13,115.24x = 19,676.51 × 5,720.35
  4. Step 4: Simplify right side
    13,115.24x = 112,556,523.98
  5. Step 5: Solve for x
    x = 112,556,523.98/13,115.24
  6. Step 6: Final answer
    x = 8,582.12

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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.