Home / 13,124.62-18,113.54-8,286.38

Finding the Fourth Proportional to 13,124.62, 18,113.54 and 8,286.38

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Solution

The fourth proportional to 13,124.62, 18,113.54 and 8,286.38 is: 11,436.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.62 : 18,113.54 = 8,286.38 : x
  2. Step 2: Convert to fraction form
    13,124.62/18,113.54 = 8,286.38/x
  3. Step 3: Cross multiply
    13,124.62x = 18,113.54 × 8,286.38
  4. Step 4: Simplify right side
    13,124.62x = 150,095,611.51
  5. Step 5: Solve for x
    x = 150,095,611.51/13,124.62
  6. Step 6: Final answer
    x = 11,436.19

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Half scale
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Double scale
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Similar ratio
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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.