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Finding the Fourth Proportional to 12,787.84, 17,646.53 and 7,044.17

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Solution

The fourth proportional to 12,787.84, 17,646.53 and 7,044.17 is: 9,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.84 : 17,646.53 = 7,044.17 : x
  2. Step 2: Convert to fraction form
    12,787.84/17,646.53 = 7,044.17/x
  3. Step 3: Cross multiply
    12,787.84x = 17,646.53 × 7,044.17
  4. Step 4: Simplify right side
    12,787.84x = 124,305,166.13
  5. Step 5: Solve for x
    x = 124,305,166.13/12,787.84
  6. Step 6: Final answer
    x = 9,720.57

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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.