Home / 20,027.61-27,608.62-15,765.01

Finding the Fourth Proportional to 20,027.61, 27,608.62 and 15,765.01

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Solution

The fourth proportional to 20,027.61, 27,608.62 and 15,765.01 is: 21,732.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,027.61 : 27,608.62 = 15,765.01 : x
  2. Step 2: Convert to fraction form
    20,027.61/27,608.62 = 15,765.01/x
  3. Step 3: Cross multiply
    20,027.61x = 27,608.62 × 15,765.01
  4. Step 4: Simplify right side
    20,027.61x = 435,250,170.39
  5. Step 5: Solve for x
    x = 435,250,170.39/20,027.61
  6. Step 6: Final answer
    x = 21,732.51

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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.