Home / 13,019.19-17,961.64-8,545.42

Finding the Fourth Proportional to 13,019.19, 17,961.64 and 8,545.42

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Solution

The fourth proportional to 13,019.19, 17,961.64 and 8,545.42 is: 11,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.19 : 17,961.64 = 8,545.42 : x
  2. Step 2: Convert to fraction form
    13,019.19/17,961.64 = 8,545.42/x
  3. Step 3: Cross multiply
    13,019.19x = 17,961.64 × 8,545.42
  4. Step 4: Simplify right side
    13,019.19x = 153,489,757.69
  5. Step 5: Solve for x
    x = 153,489,757.69/13,019.19
  6. Step 6: Final answer
    x = 11,789.50

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1.5x scale

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.