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Finding the Fourth Proportional to 18,607.12, 27,866.94 and 8,725.12

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Solution

The fourth proportional to 18,607.12, 27,866.94 and 8,725.12 is: 13,067.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.12 : 27,866.94 = 8,725.12 : x
  2. Step 2: Convert to fraction form
    18,607.12/27,866.94 = 8,725.12/x
  3. Step 3: Cross multiply
    18,607.12x = 27,866.94 × 8,725.12
  4. Step 4: Simplify right side
    18,607.12x = 243,142,395.53
  5. Step 5: Solve for x
    x = 243,142,395.53/18,607.12
  6. Step 6: Final answer
    x = 13,067.17

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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.