Home / 15,487.43-21,371.85-8,413.83

Finding the Fourth Proportional to 15,487.43, 21,371.85 and 8,413.83

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Solution

The fourth proportional to 15,487.43, 21,371.85 and 8,413.83 is: 11,610.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.43 : 21,371.85 = 8,413.83 : x
  2. Step 2: Convert to fraction form
    15,487.43/21,371.85 = 8,413.83/x
  3. Step 3: Cross multiply
    15,487.43x = 21,371.85 × 8,413.83
  4. Step 4: Simplify right side
    15,487.43x = 179,819,112.69
  5. Step 5: Solve for x
    x = 179,819,112.69/15,487.43
  6. Step 6: Final answer
    x = 11,610.65

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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.