Home / 12,387.72-18,583.52-4,065.84

Finding the Fourth Proportional to 12,387.72, 18,583.52 and 4,065.84

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Solution

The fourth proportional to 12,387.72, 18,583.52 and 4,065.84 is: 6,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.72 : 18,583.52 = 4,065.84 : x
  2. Step 2: Convert to fraction form
    12,387.72/18,583.52 = 4,065.84/x
  3. Step 3: Cross multiply
    12,387.72x = 18,583.52 × 4,065.84
  4. Step 4: Simplify right side
    12,387.72x = 75,557,598.63
  5. Step 5: Solve for x
    x = 75,557,598.63/12,387.72
  6. Step 6: Final answer
    x = 6,099.40

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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.