Home / 20,998.16-28,975.20-11,566.16

Finding the Fourth Proportional to 20,998.16, 28,975.20 and 11,566.16

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Solution

The fourth proportional to 20,998.16, 28,975.20 and 11,566.16 is: 15,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.16 : 28,975.20 = 11,566.16 : x
  2. Step 2: Convert to fraction form
    20,998.16/28,975.20 = 11,566.16/x
  3. Step 3: Cross multiply
    20,998.16x = 28,975.20 × 11,566.16
  4. Step 4: Simplify right side
    20,998.16x = 335,131,799.23
  5. Step 5: Solve for x
    x = 335,131,799.23/20,998.16
  6. Step 6: Final answer
    x = 15,960.06

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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.