Home / 12,515.95-17,269.09-8,545.33

Finding the Fourth Proportional to 12,515.95, 17,269.09 and 8,545.33

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Solution

The fourth proportional to 12,515.95, 17,269.09 and 8,545.33 is: 11,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.95 : 17,269.09 = 8,545.33 : x
  2. Step 2: Convert to fraction form
    12,515.95/17,269.09 = 8,545.33/x
  3. Step 3: Cross multiply
    12,515.95x = 17,269.09 × 8,545.33
  4. Step 4: Simplify right side
    12,515.95x = 147,570,072.85
  5. Step 5: Solve for x
    x = 147,570,072.85/12,515.95
  6. Step 6: Final answer
    x = 11,790.56

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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.