Home / 15,486.65-21,371.60-8,413.07

Finding the Fourth Proportional to 15,486.65, 21,371.60 and 8,413.07

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Solution

The fourth proportional to 15,486.65, 21,371.60 and 8,413.07 is: 11,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.65 : 21,371.60 = 8,413.07 : x
  2. Step 2: Convert to fraction form
    15,486.65/21,371.60 = 8,413.07/x
  3. Step 3: Cross multiply
    15,486.65x = 21,371.60 × 8,413.07
  4. Step 4: Simplify right side
    15,486.65x = 179,800,766.81
  5. Step 5: Solve for x
    x = 179,800,766.81/15,486.65
  6. Step 6: Final answer
    x = 11,610.05

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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.