Home / 20,413.39-28,168.30-11,461.87

Finding the Fourth Proportional to 20,413.39, 28,168.30 and 11,461.87

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Solution

The fourth proportional to 20,413.39, 28,168.30 and 11,461.87 is: 15,816.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.39 : 28,168.30 = 11,461.87 : x
  2. Step 2: Convert to fraction form
    20,413.39/28,168.30 = 11,461.87/x
  3. Step 3: Cross multiply
    20,413.39x = 28,168.30 × 11,461.87
  4. Step 4: Simplify right side
    20,413.39x = 322,861,392.72
  5. Step 5: Solve for x
    x = 322,861,392.72/20,413.39
  6. Step 6: Final answer
    x = 15,816.16

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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.