Home / 29,380.78-40,525.43-18,765.66

Finding the Fourth Proportional to 29,380.78, 40,525.43 and 18,765.66

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Solution

The fourth proportional to 29,380.78, 40,525.43 and 18,765.66 is: 25,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,380.78 : 40,525.43 = 18,765.66 : x
  2. Step 2: Convert to fraction form
    29,380.78/40,525.43 = 18,765.66/x
  3. Step 3: Cross multiply
    29,380.78x = 40,525.43 × 18,765.66
  4. Step 4: Simplify right side
    29,380.78x = 760,486,440.73
  5. Step 5: Solve for x
    x = 760,486,440.73/29,380.78
  6. Step 6: Final answer
    x = 25,883.81

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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.