Home / 12,500.87-18,754.21-3,615.84

Finding the Fourth Proportional to 12,500.87, 18,754.21 and 3,615.84

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Solution

The fourth proportional to 12,500.87, 18,754.21 and 3,615.84 is: 5,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,500.87 : 18,754.21 = 3,615.84 : x
  2. Step 2: Convert to fraction form
    12,500.87/18,754.21 = 3,615.84/x
  3. Step 3: Cross multiply
    12,500.87x = 18,754.21 × 3,615.84
  4. Step 4: Simplify right side
    12,500.87x = 67,812,217.04
  5. Step 5: Solve for x
    x = 67,812,217.04/12,500.87
  6. Step 6: Final answer
    x = 5,424.60

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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.