Home / 13,386.87-18,473.60-8,081.71

Finding the Fourth Proportional to 13,386.87, 18,473.60 and 8,081.71

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Solution

The fourth proportional to 13,386.87, 18,473.60 and 8,081.71 is: 11,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.87 : 18,473.60 = 8,081.71 : x
  2. Step 2: Convert to fraction form
    13,386.87/18,473.60 = 8,081.71/x
  3. Step 3: Cross multiply
    13,386.87x = 18,473.60 × 8,081.71
  4. Step 4: Simplify right side
    13,386.87x = 149,298,251.88
  5. Step 5: Solve for x
    x = 149,298,251.88/13,386.87
  6. Step 6: Final answer
    x = 11,152.59

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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.