Home / 20,139.02-27,791.46-11,186.12

Finding the Fourth Proportional to 20,139.02, 27,791.46 and 11,186.12

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Solution

The fourth proportional to 20,139.02, 27,791.46 and 11,186.12 is: 15,436.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.02 : 27,791.46 = 11,186.12 : x
  2. Step 2: Convert to fraction form
    20,139.02/27,791.46 = 11,186.12/x
  3. Step 3: Cross multiply
    20,139.02x = 27,791.46 × 11,186.12
  4. Step 4: Simplify right side
    20,139.02x = 310,878,606.54
  5. Step 5: Solve for x
    x = 310,878,606.54/20,139.02
  6. Step 6: Final answer
    x = 15,436.63

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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.