Home / 13,078.87-18,054.36-8,835.68

Finding the Fourth Proportional to 13,078.87, 18,054.36 and 8,835.68

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Solution

The fourth proportional to 13,078.87, 18,054.36 and 8,835.68 is: 12,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.87 : 18,054.36 = 8,835.68 : x
  2. Step 2: Convert to fraction form
    13,078.87/18,054.36 = 8,835.68/x
  3. Step 3: Cross multiply
    13,078.87x = 18,054.36 × 8,835.68
  4. Step 4: Simplify right side
    13,078.87x = 159,522,592.70
  5. Step 5: Solve for x
    x = 159,522,592.70/13,078.87
  6. Step 6: Final answer
    x = 12,196.97

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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.