Home / 20,413.19-28,169.29-11,460.53

Finding the Fourth Proportional to 20,413.19, 28,169.29 and 11,460.53

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Solution

The fourth proportional to 20,413.19, 28,169.29 and 11,460.53 is: 15,815.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.19 : 28,169.29 = 11,460.53 : x
  2. Step 2: Convert to fraction form
    20,413.19/28,169.29 = 11,460.53/x
  3. Step 3: Cross multiply
    20,413.19x = 28,169.29 × 11,460.53
  4. Step 4: Simplify right side
    20,413.19x = 322,834,993.12
  5. Step 5: Solve for x
    x = 322,834,993.12/20,413.19
  6. Step 6: Final answer
    x = 15,815.02

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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.