Home / 20,111.16-27,753.85-11,158.33

Finding the Fourth Proportional to 20,111.16, 27,753.85 and 11,158.33

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Solution

The fourth proportional to 20,111.16, 27,753.85 and 11,158.33 is: 15,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.16 : 27,753.85 = 11,158.33 : x
  2. Step 2: Convert to fraction form
    20,111.16/27,753.85 = 11,158.33/x
  3. Step 3: Cross multiply
    20,111.16x = 27,753.85 × 11,158.33
  4. Step 4: Simplify right side
    20,111.16x = 309,686,617.07
  5. Step 5: Solve for x
    x = 309,686,617.07/20,111.16
  6. Step 6: Final answer
    x = 15,398.74

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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.