Home / 13,576.83-20,360.91-12,691.32

Finding the Fourth Proportional to 13,576.83, 20,360.91 and 12,691.32

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Solution

The fourth proportional to 13,576.83, 20,360.91 and 12,691.32 is: 19,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.83 : 20,360.91 = 12,691.32 : x
  2. Step 2: Convert to fraction form
    13,576.83/20,360.91 = 12,691.32/x
  3. Step 3: Cross multiply
    13,576.83x = 20,360.91 × 12,691.32
  4. Step 4: Simplify right side
    13,576.83x = 258,406,824.30
  5. Step 5: Solve for x
    x = 258,406,824.30/13,576.83
  6. Step 6: Final answer
    x = 19,032.93

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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.