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Finding the Fourth Proportional to 11,905.18, 16,411.74 and 9,067.74

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Solution

The fourth proportional to 11,905.18, 16,411.74 and 9,067.74 is: 12,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.18 : 16,411.74 = 9,067.74 : x
  2. Step 2: Convert to fraction form
    11,905.18/16,411.74 = 9,067.74/x
  3. Step 3: Cross multiply
    11,905.18x = 16,411.74 × 9,067.74
  4. Step 4: Simplify right side
    11,905.18x = 148,817,391.27
  5. Step 5: Solve for x
    x = 148,817,391.27/11,905.18
  6. Step 6: Final answer
    x = 12,500.22

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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.