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Finding the Fourth Proportional to 13,553.01, 20,329.52 and 5,760.81

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Solution

The fourth proportional to 13,553.01, 20,329.52 and 5,760.81 is: 8,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.01 : 20,329.52 = 5,760.81 : x
  2. Step 2: Convert to fraction form
    13,553.01/20,329.52 = 5,760.81/x
  3. Step 3: Cross multiply
    13,553.01x = 20,329.52 × 5,760.81
  4. Step 4: Simplify right side
    13,553.01x = 117,114,473.31
  5. Step 5: Solve for x
    x = 117,114,473.31/13,553.01
  6. Step 6: Final answer
    x = 8,641.22

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1.5x scale

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.