Home / 20,366.82-28,103.40-11,413.08

Finding the Fourth Proportional to 20,366.82, 28,103.40 and 11,413.08

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Solution

The fourth proportional to 20,366.82, 28,103.40 and 11,413.08 is: 15,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.82 : 28,103.40 = 11,413.08 : x
  2. Step 2: Convert to fraction form
    20,366.82/28,103.40 = 11,413.08/x
  3. Step 3: Cross multiply
    20,366.82x = 28,103.40 × 11,413.08
  4. Step 4: Simplify right side
    20,366.82x = 320,746,352.47
  5. Step 5: Solve for x
    x = 320,746,352.47/20,366.82
  6. Step 6: Final answer
    x = 15,748.47

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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.