Home / 13,805.74-20,712.24-3,945.76

Finding the Fourth Proportional to 13,805.74, 20,712.24 and 3,945.76

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Solution

The fourth proportional to 13,805.74, 20,712.24 and 3,945.76 is: 5,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.74 : 20,712.24 = 3,945.76 : x
  2. Step 2: Convert to fraction form
    13,805.74/20,712.24 = 3,945.76/x
  3. Step 3: Cross multiply
    13,805.74x = 20,712.24 × 3,945.76
  4. Step 4: Simplify right side
    13,805.74x = 81,725,528.10
  5. Step 5: Solve for x
    x = 81,725,528.10/13,805.74
  6. Step 6: Final answer
    x = 5,919.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.