Home / 12,579.36-17,363.39-8,103.11

Finding the Fourth Proportional to 12,579.36, 17,363.39 and 8,103.11

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Solution

The fourth proportional to 12,579.36, 17,363.39 and 8,103.11 is: 11,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.36 : 17,363.39 = 8,103.11 : x
  2. Step 2: Convert to fraction form
    12,579.36/17,363.39 = 8,103.11/x
  3. Step 3: Cross multiply
    12,579.36x = 17,363.39 × 8,103.11
  4. Step 4: Simplify right side
    12,579.36x = 140,697,331.81
  5. Step 5: Solve for x
    x = 140,697,331.81/12,579.36
  6. Step 6: Final answer
    x = 11,184.78

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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.