Home / 15,486.48-21,371.76-8,413.38

Finding the Fourth Proportional to 15,486.48, 21,371.76 and 8,413.38

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Solution

The fourth proportional to 15,486.48, 21,371.76 and 8,413.38 is: 11,610.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.48 : 21,371.76 = 8,413.38 : x
  2. Step 2: Convert to fraction form
    15,486.48/21,371.76 = 8,413.38/x
  3. Step 3: Cross multiply
    15,486.48x = 21,371.76 × 8,413.38
  4. Step 4: Simplify right side
    15,486.48x = 179,808,738.15
  5. Step 5: Solve for x
    x = 179,808,738.15/15,486.48
  6. Step 6: Final answer
    x = 11,610.69

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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.