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Finding the Fourth Proportional to 11,876.07, 17,820.31 and 8,616.07

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Solution

The fourth proportional to 11,876.07, 17,820.31 and 8,616.07 is: 12,928.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.07 : 17,820.31 = 8,616.07 : x
  2. Step 2: Convert to fraction form
    11,876.07/17,820.31 = 8,616.07/x
  3. Step 3: Cross multiply
    11,876.07x = 17,820.31 × 8,616.07
  4. Step 4: Simplify right side
    11,876.07x = 153,541,038.38
  5. Step 5: Solve for x
    x = 153,541,038.38/11,876.07
  6. Step 6: Final answer
    x = 12,928.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.