Home / 12,582.20-18,866.10-3,815.80

Finding the Fourth Proportional to 12,582.20, 18,866.10 and 3,815.80

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Solution

The fourth proportional to 12,582.20, 18,866.10 and 3,815.80 is: 5,721.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,582.20 : 18,866.10 = 3,815.80 : x
  2. Step 2: Convert to fraction form
    12,582.20/18,866.10 = 3,815.80/x
  3. Step 3: Cross multiply
    12,582.20x = 18,866.10 × 3,815.80
  4. Step 4: Simplify right side
    12,582.20x = 71,989,264.38
  5. Step 5: Solve for x
    x = 71,989,264.38/12,582.20
  6. Step 6: Final answer
    x = 5,721.52

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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.