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Finding the Fourth Proportional to 15,150.33, 20,917.44 and 9,775.17

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Solution

The fourth proportional to 15,150.33, 20,917.44 and 9,775.17 is: 13,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.33 : 20,917.44 = 9,775.17 : x
  2. Step 2: Convert to fraction form
    15,150.33/20,917.44 = 9,775.17/x
  3. Step 3: Cross multiply
    15,150.33x = 20,917.44 × 9,775.17
  4. Step 4: Simplify right side
    15,150.33x = 204,471,531.96
  5. Step 5: Solve for x
    x = 204,471,531.96/15,150.33
  6. Step 6: Final answer
    x = 13,496.18

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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.