Home / 13,579.13-20,370.51-5,789.76

Finding the Fourth Proportional to 13,579.13, 20,370.51 and 5,789.76

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Solution

The fourth proportional to 13,579.13, 20,370.51 and 5,789.76 is: 8,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.13 : 20,370.51 = 5,789.76 : x
  2. Step 2: Convert to fraction form
    13,579.13/20,370.51 = 5,789.76/x
  3. Step 3: Cross multiply
    13,579.13x = 20,370.51 × 5,789.76
  4. Step 4: Simplify right side
    13,579.13x = 117,940,363.98
  5. Step 5: Solve for x
    x = 117,940,363.98/13,579.13
  6. Step 6: Final answer
    x = 8,685.42

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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.