Home / 13,553.05-20,317.88-5,238.90

Finding the Fourth Proportional to 13,553.05, 20,317.88 and 5,238.90

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Solution

The fourth proportional to 13,553.05, 20,317.88 and 5,238.90 is: 7,853.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.05 : 20,317.88 = 5,238.90 : x
  2. Step 2: Convert to fraction form
    13,553.05/20,317.88 = 5,238.90/x
  3. Step 3: Cross multiply
    13,553.05x = 20,317.88 × 5,238.90
  4. Step 4: Simplify right side
    13,553.05x = 106,443,341.53
  5. Step 5: Solve for x
    x = 106,443,341.53/13,553.05
  6. Step 6: Final answer
    x = 7,853.83

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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.