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Finding the Fourth Proportional to 12,886.62, 19,329.93 and 5,960.22

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Solution

The fourth proportional to 12,886.62, 19,329.93 and 5,960.22 is: 8,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.62 : 19,329.93 = 5,960.22 : x
  2. Step 2: Convert to fraction form
    12,886.62/19,329.93 = 5,960.22/x
  3. Step 3: Cross multiply
    12,886.62x = 19,329.93 × 5,960.22
  4. Step 4: Simplify right side
    12,886.62x = 115,210,635.38
  5. Step 5: Solve for x
    x = 115,210,635.38/12,886.62
  6. Step 6: Final answer
    x = 8,940.33

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.