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Finding the Fourth Proportional to 9,813, 13,542.14 and 5,621.25

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Solution

The fourth proportional to 9,813, 13,542.14 and 5,621.25 is: 7,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,813 : 13,542.14 = 5,621.25 : x
  2. Step 2: Convert to fraction form
    9,813/13,542.14 = 5,621.25/x
  3. Step 3: Cross multiply
    9,813x = 13,542.14 × 5,621.25
  4. Step 4: Simplify right side
    9,813x = 76,123,768.53
  5. Step 5: Solve for x
    x = 76,123,768.53/9,813
  6. Step 6: Final answer
    x = 7,757.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.