Home / 15,487.19-21,372.42-8,413.66

Finding the Fourth Proportional to 15,487.19, 21,372.42 and 8,413.66

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Solution

The fourth proportional to 15,487.19, 21,372.42 and 8,413.66 is: 11,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.19 : 21,372.42 = 8,413.66 : x
  2. Step 2: Convert to fraction form
    15,487.19/21,372.42 = 8,413.66/x
  3. Step 3: Cross multiply
    15,487.19x = 21,372.42 × 8,413.66
  4. Step 4: Simplify right side
    15,487.19x = 179,820,275.26
  5. Step 5: Solve for x
    x = 179,820,275.26/15,487.19
  6. Step 6: Final answer
    x = 11,610.90

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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.