Home / 13,631.16-20,442.38-4,395

Finding the Fourth Proportional to 13,631.16, 20,442.38 and 4,395

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Solution

The fourth proportional to 13,631.16, 20,442.38 and 4,395 is: 6,591.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.16 : 20,442.38 = 4,395 : x
  2. Step 2: Convert to fraction form
    13,631.16/20,442.38 = 4,395/x
  3. Step 3: Cross multiply
    13,631.16x = 20,442.38 × 4,395
  4. Step 4: Simplify right side
    13,631.16x = 89,844,260.10
  5. Step 5: Solve for x
    x = 89,844,260.10/13,631.16
  6. Step 6: Final answer
    x = 6,591.09

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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.