Home / 20,102.70-27,745.04-11,153.08

Finding the Fourth Proportional to 20,102.70, 27,745.04 and 11,153.08

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Solution

The fourth proportional to 20,102.70, 27,745.04 and 11,153.08 is: 15,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.70 : 27,745.04 = 11,153.08 : x
  2. Step 2: Convert to fraction form
    20,102.70/27,745.04 = 11,153.08/x
  3. Step 3: Cross multiply
    20,102.70x = 27,745.04 × 11,153.08
  4. Step 4: Simplify right side
    20,102.70x = 309,442,713.29
  5. Step 5: Solve for x
    x = 309,442,713.29/20,102.70
  6. Step 6: Final answer
    x = 15,393.10

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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.