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Finding the Fourth Proportional to 12,368, 18,550.56 and 3,134.08

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Solution

The fourth proportional to 12,368, 18,550.56 and 3,134.08 is: 4,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368 : 18,550.56 = 3,134.08 : x
  2. Step 2: Convert to fraction form
    12,368/18,550.56 = 3,134.08/x
  3. Step 3: Cross multiply
    12,368x = 18,550.56 × 3,134.08
  4. Step 4: Simplify right side
    12,368x = 58,138,939.08
  5. Step 5: Solve for x
    x = 58,138,939.08/12,368
  6. Step 6: Final answer
    x = 4,700.76

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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.