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Finding the Fourth Proportional to 11,714.64, 16,172.04 and 7,957.68

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Solution

The fourth proportional to 11,714.64, 16,172.04 and 7,957.68 is: 10,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,714.64 : 16,172.04 = 7,957.68 : x
  2. Step 2: Convert to fraction form
    11,714.64/16,172.04 = 7,957.68/x
  3. Step 3: Cross multiply
    11,714.64x = 16,172.04 × 7,957.68
  4. Step 4: Simplify right side
    11,714.64x = 128,691,919.27
  5. Step 5: Solve for x
    x = 128,691,919.27/11,714.64
  6. Step 6: Final answer
    x = 10,985.56

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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.