Home / 20,996.66-28,975.38-11,565.16

Finding the Fourth Proportional to 20,996.66, 28,975.38 and 11,565.16

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Solution

The fourth proportional to 20,996.66, 28,975.38 and 11,565.16 is: 15,959.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.66 : 28,975.38 = 11,565.16 : x
  2. Step 2: Convert to fraction form
    20,996.66/28,975.38 = 11,565.16/x
  3. Step 3: Cross multiply
    20,996.66x = 28,975.38 × 11,565.16
  4. Step 4: Simplify right side
    20,996.66x = 335,104,905.76
  5. Step 5: Solve for x
    x = 335,104,905.76/20,996.66
  6. Step 6: Final answer
    x = 15,959.91

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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.