Home / 20,601.41-28,429.18-11,169.77

Finding the Fourth Proportional to 20,601.41, 28,429.18 and 11,169.77

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Solution

The fourth proportional to 20,601.41, 28,429.18 and 11,169.77 is: 15,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.41 : 28,429.18 = 11,169.77 : x
  2. Step 2: Convert to fraction form
    20,601.41/28,429.18 = 11,169.77/x
  3. Step 3: Cross multiply
    20,601.41x = 28,429.18 × 11,169.77
  4. Step 4: Simplify right side
    20,601.41x = 317,547,231.82
  5. Step 5: Solve for x
    x = 317,547,231.82/20,601.41
  6. Step 6: Final answer
    x = 15,413.86

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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.