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Finding the Fourth Proportional to 12,578.98, 17,360.50 and 7,545.97

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Solution

The fourth proportional to 12,578.98, 17,360.50 and 7,545.97 is: 10,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.98 : 17,360.50 = 7,545.97 : x
  2. Step 2: Convert to fraction form
    12,578.98/17,360.50 = 7,545.97/x
  3. Step 3: Cross multiply
    12,578.98x = 17,360.50 × 7,545.97
  4. Step 4: Simplify right side
    12,578.98x = 131,001,812.19
  5. Step 5: Solve for x
    x = 131,001,812.19/12,578.98
  6. Step 6: Final answer
    x = 10,414.34

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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.