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Finding the Fourth Proportional to 12,512.64, 18,676.64 and 11,036.80

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Solution

The fourth proportional to 12,512.64, 18,676.64 and 11,036.80 is: 16,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.64 : 18,676.64 = 11,036.80 : x
  2. Step 2: Convert to fraction form
    12,512.64/18,676.64 = 11,036.80/x
  3. Step 3: Cross multiply
    12,512.64x = 18,676.64 × 11,036.80
  4. Step 4: Simplify right side
    12,512.64x = 206,130,340.35
  5. Step 5: Solve for x
    x = 206,130,340.35/12,512.64
  6. Step 6: Final answer
    x = 16,473.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.