Home / 10,399.89-15,583.40-8,442.53

Finding the Fourth Proportional to 10,399.89, 15,583.40 and 8,442.53

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Solution

The fourth proportional to 10,399.89, 15,583.40 and 8,442.53 is: 12,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.89 : 15,583.40 = 8,442.53 : x
  2. Step 2: Convert to fraction form
    10,399.89/15,583.40 = 8,442.53/x
  3. Step 3: Cross multiply
    10,399.89x = 15,583.40 × 8,442.53
  4. Step 4: Simplify right side
    10,399.89x = 131,563,201.87
  5. Step 5: Solve for x
    x = 131,563,201.87/10,399.89
  6. Step 6: Final answer
    x = 12,650.44

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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.