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Finding the Fourth Proportional to 12,376.13, 17,079.05 and 6,787.13

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Solution

The fourth proportional to 12,376.13, 17,079.05 and 6,787.13 is: 9,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.13 : 17,079.05 = 6,787.13 : x
  2. Step 2: Convert to fraction form
    12,376.13/17,079.05 = 6,787.13/x
  3. Step 3: Cross multiply
    12,376.13x = 17,079.05 × 6,787.13
  4. Step 4: Simplify right side
    12,376.13x = 115,917,664.20
  5. Step 5: Solve for x
    x = 115,917,664.20/12,376.13
  6. Step 6: Final answer
    x = 9,366.23

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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.