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Finding the Fourth Proportional to 12,455.92, 17,189.10 and 6,866.92

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Solution

The fourth proportional to 12,455.92, 17,189.10 and 6,866.92 is: 9,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.92 : 17,189.10 = 6,866.92 : x
  2. Step 2: Convert to fraction form
    12,455.92/17,189.10 = 6,866.92/x
  3. Step 3: Cross multiply
    12,455.92x = 17,189.10 × 6,866.92
  4. Step 4: Simplify right side
    12,455.92x = 118,036,174.57
  5. Step 5: Solve for x
    x = 118,036,174.57/12,455.92
  6. Step 6: Final answer
    x = 9,476.31

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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.