Home / 12,387.40-18,582.30-3,622.36

Finding the Fourth Proportional to 12,387.40, 18,582.30 and 3,622.36

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Solution

The fourth proportional to 12,387.40, 18,582.30 and 3,622.36 is: 5,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.40 : 18,582.30 = 3,622.36 : x
  2. Step 2: Convert to fraction form
    12,387.40/18,582.30 = 3,622.36/x
  3. Step 3: Cross multiply
    12,387.40x = 18,582.30 × 3,622.36
  4. Step 4: Simplify right side
    12,387.40x = 67,311,780.23
  5. Step 5: Solve for x
    x = 67,311,780.23/12,387.40
  6. Step 6: Final answer
    x = 5,433.89

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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.