Home / 20,392.53-28,111.91-14,413.65

Finding the Fourth Proportional to 20,392.53, 28,111.91 and 14,413.65

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Solution

The fourth proportional to 20,392.53, 28,111.91 and 14,413.65 is: 19,869.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.53 : 28,111.91 = 14,413.65 : x
  2. Step 2: Convert to fraction form
    20,392.53/28,111.91 = 14,413.65/x
  3. Step 3: Cross multiply
    20,392.53x = 28,111.91 × 14,413.65
  4. Step 4: Simplify right side
    20,392.53x = 405,195,159.50
  5. Step 5: Solve for x
    x = 405,195,159.50/20,392.53
  6. Step 6: Final answer
    x = 19,869.78

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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.