Home / 12,945.59-19,418.38-5,545.25

Finding the Fourth Proportional to 12,945.59, 19,418.38 and 5,545.25

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Solution

The fourth proportional to 12,945.59, 19,418.38 and 5,545.25 is: 8,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.59 : 19,418.38 = 5,545.25 : x
  2. Step 2: Convert to fraction form
    12,945.59/19,418.38 = 5,545.25/x
  3. Step 3: Cross multiply
    12,945.59x = 19,418.38 × 5,545.25
  4. Step 4: Simplify right side
    12,945.59x = 107,679,733.56
  5. Step 5: Solve for x
    x = 107,679,733.56/12,945.59
  6. Step 6: Final answer
    x = 8,317.87

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1.5x scale

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.