Home / 39,162.15-54,043.70-21,257.13

Finding the Fourth Proportional to 39,162.15, 54,043.70 and 21,257.13

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Solution

The fourth proportional to 39,162.15, 54,043.70 and 21,257.13 is: 29,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162.15 : 54,043.70 = 21,257.13 : x
  2. Step 2: Convert to fraction form
    39,162.15/54,043.70 = 21,257.13/x
  3. Step 3: Cross multiply
    39,162.15x = 54,043.70 × 21,257.13
  4. Step 4: Simplify right side
    39,162.15x = 1,148,813,850.30
  5. Step 5: Solve for x
    x = 1,148,813,850.30/39,162.15
  6. Step 6: Final answer
    x = 29,334.80

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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.