Home / 13,998.98-21,002.26-5,234.78

Finding the Fourth Proportional to 13,998.98, 21,002.26 and 5,234.78

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Solution

The fourth proportional to 13,998.98, 21,002.26 and 5,234.78 is: 7,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.98 : 21,002.26 = 5,234.78 : x
  2. Step 2: Convert to fraction form
    13,998.98/21,002.26 = 5,234.78/x
  3. Step 3: Cross multiply
    13,998.98x = 21,002.26 × 5,234.78
  4. Step 4: Simplify right side
    13,998.98x = 109,942,210.60
  5. Step 5: Solve for x
    x = 109,942,210.60/13,998.98
  6. Step 6: Final answer
    x = 7,853.59

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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.