Home / 13,208.78-18,229.20-7,545.26

Finding the Fourth Proportional to 13,208.78, 18,229.20 and 7,545.26

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Solution

The fourth proportional to 13,208.78, 18,229.20 and 7,545.26 is: 10,413.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.78 : 18,229.20 = 7,545.26 : x
  2. Step 2: Convert to fraction form
    13,208.78/18,229.20 = 7,545.26/x
  3. Step 3: Cross multiply
    13,208.78x = 18,229.20 × 7,545.26
  4. Step 4: Simplify right side
    13,208.78x = 137,544,053.59
  5. Step 5: Solve for x
    x = 137,544,053.59/13,208.78
  6. Step 6: Final answer
    x = 10,413.08

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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.