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Finding the Fourth Proportional to 26,661.72, 39,979.15 and 8,886.08

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Solution

The fourth proportional to 26,661.72, 39,979.15 and 8,886.08 is: 13,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,661.72 : 39,979.15 = 8,886.08 : x
  2. Step 2: Convert to fraction form
    26,661.72/39,979.15 = 8,886.08/x
  3. Step 3: Cross multiply
    26,661.72x = 39,979.15 × 8,886.08
  4. Step 4: Simplify right side
    26,661.72x = 355,257,925.23
  5. Step 5: Solve for x
    x = 355,257,925.23/26,661.72
  6. Step 6: Final answer
    x = 13,324.64

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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.