Home / 39,141.15-54,014.78-21,236.15

Finding the Fourth Proportional to 39,141.15, 54,014.78 and 21,236.15

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Solution

The fourth proportional to 39,141.15, 54,014.78 and 21,236.15 is: 29,305.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,141.15 : 54,014.78 = 21,236.15 : x
  2. Step 2: Convert to fraction form
    39,141.15/54,014.78 = 21,236.15/x
  3. Step 3: Cross multiply
    39,141.15x = 54,014.78 × 21,236.15
  4. Step 4: Simplify right side
    39,141.15x = 1,147,065,970.30
  5. Step 5: Solve for x
    x = 1,147,065,970.30/39,141.15
  6. Step 6: Final answer
    x = 29,305.88

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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.