Home / 15,486.63-21,371.41-8,413.05

Finding the Fourth Proportional to 15,486.63, 21,371.41 and 8,413.05

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Solution

The fourth proportional to 15,486.63, 21,371.41 and 8,413.05 is: 11,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.63 : 21,371.41 = 8,413.05 : x
  2. Step 2: Convert to fraction form
    15,486.63/21,371.41 = 8,413.05/x
  3. Step 3: Cross multiply
    15,486.63x = 21,371.41 × 8,413.05
  4. Step 4: Simplify right side
    15,486.63x = 179,798,740.90
  5. Step 5: Solve for x
    x = 179,798,740.90/15,486.63
  6. Step 6: Final answer
    x = 11,609.93

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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.