Home / 20,121.02-27,765.69-11,168.52

Finding the Fourth Proportional to 20,121.02, 27,765.69 and 11,168.52

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Solution

The fourth proportional to 20,121.02, 27,765.69 and 11,168.52 is: 15,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.02 : 27,765.69 = 11,168.52 : x
  2. Step 2: Convert to fraction form
    20,121.02/27,765.69 = 11,168.52/x
  3. Step 3: Cross multiply
    20,121.02x = 27,765.69 × 11,168.52
  4. Step 4: Simplify right side
    20,121.02x = 310,101,664.08
  5. Step 5: Solve for x
    x = 310,101,664.08/20,121.02
  6. Step 6: Final answer
    x = 15,411.83

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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.