Home / 20,211.44-27,881.75-13,506.05

Finding the Fourth Proportional to 20,211.44, 27,881.75 and 13,506.05

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Solution

The fourth proportional to 20,211.44, 27,881.75 and 13,506.05 is: 18,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.44 : 27,881.75 = 13,506.05 : x
  2. Step 2: Convert to fraction form
    20,211.44/27,881.75 = 13,506.05/x
  3. Step 3: Cross multiply
    20,211.44x = 27,881.75 × 13,506.05
  4. Step 4: Simplify right side
    20,211.44x = 376,572,413.06
  5. Step 5: Solve for x
    x = 376,572,413.06/20,211.44
  6. Step 6: Final answer
    x = 18,631.65

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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.