Home / 13,078.80-19,581.24-12,045.42

Finding the Fourth Proportional to 13,078.80, 19,581.24 and 12,045.42

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Solution

The fourth proportional to 13,078.80, 19,581.24 and 12,045.42 is: 18,034.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.80 : 19,581.24 = 12,045.42 : x
  2. Step 2: Convert to fraction form
    13,078.80/19,581.24 = 12,045.42/x
  3. Step 3: Cross multiply
    13,078.80x = 19,581.24 × 12,045.42
  4. Step 4: Simplify right side
    13,078.80x = 235,864,259.92
  5. Step 5: Solve for x
    x = 235,864,259.92/13,078.80
  6. Step 6: Final answer
    x = 18,034.09

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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.