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Finding the Fourth Proportional to 12,476.91, 17,217.43 and 7,098.63

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Solution

The fourth proportional to 12,476.91, 17,217.43 and 7,098.63 is: 9,795.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.91 : 17,217.43 = 7,098.63 : x
  2. Step 2: Convert to fraction form
    12,476.91/17,217.43 = 7,098.63/x
  3. Step 3: Cross multiply
    12,476.91x = 17,217.43 × 7,098.63
  4. Step 4: Simplify right side
    12,476.91x = 122,220,165.12
  5. Step 5: Solve for x
    x = 122,220,165.12/12,476.91
  6. Step 6: Final answer
    x = 9,795.71

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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.