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Finding the Fourth Proportional to 12,792.75, 17,654.13 and 7,203.75

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Solution

The fourth proportional to 12,792.75, 17,654.13 and 7,203.75 is: 9,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.75 : 17,654.13 = 7,203.75 : x
  2. Step 2: Convert to fraction form
    12,792.75/17,654.13 = 7,203.75/x
  3. Step 3: Cross multiply
    12,792.75x = 17,654.13 × 7,203.75
  4. Step 4: Simplify right side
    12,792.75x = 127,175,938.99
  5. Step 5: Solve for x
    x = 127,175,938.99/12,792.75
  6. Step 6: Final answer
    x = 9,941.25

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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.