Home / 20,866.02-28,794.92-11,305.70

Finding the Fourth Proportional to 20,866.02, 28,794.92 and 11,305.70

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Solution

The fourth proportional to 20,866.02, 28,794.92 and 11,305.70 is: 15,601.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.02 : 28,794.92 = 11,305.70 : x
  2. Step 2: Convert to fraction form
    20,866.02/28,794.92 = 11,305.70/x
  3. Step 3: Cross multiply
    20,866.02x = 28,794.92 × 11,305.70
  4. Step 4: Simplify right side
    20,866.02x = 325,546,727.04
  5. Step 5: Solve for x
    x = 325,546,727.04/20,866.02
  6. Step 6: Final answer
    x = 15,601.76

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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.