Home / 10,621.87-15,931.77-3,226.39

Finding the Fourth Proportional to 10,621.87, 15,931.77 and 3,226.39

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Solution

The fourth proportional to 10,621.87, 15,931.77 and 3,226.39 is: 4,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.87 : 15,931.77 = 3,226.39 : x
  2. Step 2: Convert to fraction form
    10,621.87/15,931.77 = 3,226.39/x
  3. Step 3: Cross multiply
    10,621.87x = 15,931.77 × 3,226.39
  4. Step 4: Simplify right side
    10,621.87x = 51,402,103.41
  5. Step 5: Solve for x
    x = 51,402,103.41/10,621.87
  6. Step 6: Final answer
    x = 4,839.27

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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.