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Finding the Fourth Proportional to 12,795.41, 17,658.96 and 7,131.08

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Solution

The fourth proportional to 12,795.41, 17,658.96 and 7,131.08 is: 9,841.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.41 : 17,658.96 = 7,131.08 : x
  2. Step 2: Convert to fraction form
    12,795.41/17,658.96 = 7,131.08/x
  3. Step 3: Cross multiply
    12,795.41x = 17,658.96 × 7,131.08
  4. Step 4: Simplify right side
    12,795.41x = 125,927,368.18
  5. Step 5: Solve for x
    x = 125,927,368.18/12,795.41
  6. Step 6: Final answer
    x = 9,841.61

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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.