Home / 20,741.76-28,623.78-11,310.12

Finding the Fourth Proportional to 20,741.76, 28,623.78 and 11,310.12

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Solution

The fourth proportional to 20,741.76, 28,623.78 and 11,310.12 is: 15,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.76 : 28,623.78 = 11,310.12 : x
  2. Step 2: Convert to fraction form
    20,741.76/28,623.78 = 11,310.12/x
  3. Step 3: Cross multiply
    20,741.76x = 28,623.78 × 11,310.12
  4. Step 4: Simplify right side
    20,741.76x = 323,738,386.65
  5. Step 5: Solve for x
    x = 323,738,386.65/20,741.76
  6. Step 6: Final answer
    x = 15,608.05

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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.