Home / 13,219.92-18,244.32-8,735.80

Finding the Fourth Proportional to 13,219.92, 18,244.32 and 8,735.80

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Solution

The fourth proportional to 13,219.92, 18,244.32 and 8,735.80 is: 12,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.92 : 18,244.32 = 8,735.80 : x
  2. Step 2: Convert to fraction form
    13,219.92/18,244.32 = 8,735.80/x
  3. Step 3: Cross multiply
    13,219.92x = 18,244.32 × 8,735.80
  4. Step 4: Simplify right side
    13,219.92x = 159,378,730.66
  5. Step 5: Solve for x
    x = 159,378,730.66/13,219.92
  6. Step 6: Final answer
    x = 12,055.95

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Double scale
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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.