Home / 18,815.91-28,225.75-4,964.91

Finding the Fourth Proportional to 18,815.91, 28,225.75 and 4,964.91

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Solution

The fourth proportional to 18,815.91, 28,225.75 and 4,964.91 is: 7,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.91 : 28,225.75 = 4,964.91 : x
  2. Step 2: Convert to fraction form
    18,815.91/28,225.75 = 4,964.91/x
  3. Step 3: Cross multiply
    18,815.91x = 28,225.75 × 4,964.91
  4. Step 4: Simplify right side
    18,815.91x = 140,138,199.48
  5. Step 5: Solve for x
    x = 140,138,199.48/18,815.91
  6. Step 6: Final answer
    x = 7,447.86

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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.