Home / 12,387.64-18,579.57-4,068.49

Finding the Fourth Proportional to 12,387.64, 18,579.57 and 4,068.49

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Solution

The fourth proportional to 12,387.64, 18,579.57 and 4,068.49 is: 6,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.64 : 18,579.57 = 4,068.49 : x
  2. Step 2: Convert to fraction form
    12,387.64/18,579.57 = 4,068.49/x
  3. Step 3: Cross multiply
    12,387.64x = 18,579.57 × 4,068.49
  4. Step 4: Simplify right side
    12,387.64x = 75,590,794.75
  5. Step 5: Solve for x
    x = 75,590,794.75/12,387.64
  6. Step 6: Final answer
    x = 6,102.11

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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.