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Finding the Fourth Proportional to 12,866.68, 17,745.78 and 8,886.88

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Solution

The fourth proportional to 12,866.68, 17,745.78 and 8,886.88 is: 12,256.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.68 : 17,745.78 = 8,886.88 : x
  2. Step 2: Convert to fraction form
    12,866.68/17,745.78 = 8,886.88/x
  3. Step 3: Cross multiply
    12,866.68x = 17,745.78 × 8,886.88
  4. Step 4: Simplify right side
    12,866.68x = 157,704,617.37
  5. Step 5: Solve for x
    x = 157,704,617.37/12,866.68
  6. Step 6: Final answer
    x = 12,256.82

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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.