Home / 10,515.55-15,772.97-2,618.05

Finding the Fourth Proportional to 10,515.55, 15,772.97 and 2,618.05

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Solution

The fourth proportional to 10,515.55, 15,772.97 and 2,618.05 is: 3,926.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.55 : 15,772.97 = 2,618.05 : x
  2. Step 2: Convert to fraction form
    10,515.55/15,772.97 = 2,618.05/x
  3. Step 3: Cross multiply
    10,515.55x = 15,772.97 × 2,618.05
  4. Step 4: Simplify right side
    10,515.55x = 41,294,424.11
  5. Step 5: Solve for x
    x = 41,294,424.11/10,515.55
  6. Step 6: Final answer
    x = 3,926.99

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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.