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Finding the Fourth Proportional to 12,112.79, 16,717.79 and 7,633.09

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Solution

The fourth proportional to 12,112.79, 16,717.79 and 7,633.09 is: 10,535.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.79 : 16,717.79 = 7,633.09 : x
  2. Step 2: Convert to fraction form
    12,112.79/16,717.79 = 7,633.09/x
  3. Step 3: Cross multiply
    12,112.79x = 16,717.79 × 7,633.09
  4. Step 4: Simplify right side
    12,112.79x = 127,608,341.61
  5. Step 5: Solve for x
    x = 127,608,341.61/12,112.79
  6. Step 6: Final answer
    x = 10,535.01

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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.