Home / 15,127.39-20,876.16-8,413.30

Finding the Fourth Proportional to 15,127.39, 20,876.16 and 8,413.30

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Solution

The fourth proportional to 15,127.39, 20,876.16 and 8,413.30 is: 11,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.39 : 20,876.16 = 8,413.30 : x
  2. Step 2: Convert to fraction form
    15,127.39/20,876.16 = 8,413.30/x
  3. Step 3: Cross multiply
    15,127.39x = 20,876.16 × 8,413.30
  4. Step 4: Simplify right side
    15,127.39x = 175,637,396.93
  5. Step 5: Solve for x
    x = 175,637,396.93/15,127.39
  6. Step 6: Final answer
    x = 11,610.56

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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.