Home / 13,620.48-20,424.96-4,257.99

Finding the Fourth Proportional to 13,620.48, 20,424.96 and 4,257.99

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Solution

The fourth proportional to 13,620.48, 20,424.96 and 4,257.99 is: 6,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.48 : 20,424.96 = 4,257.99 : x
  2. Step 2: Convert to fraction form
    13,620.48/20,424.96 = 4,257.99/x
  3. Step 3: Cross multiply
    13,620.48x = 20,424.96 × 4,257.99
  4. Step 4: Simplify right side
    13,620.48x = 86,969,190.15
  5. Step 5: Solve for x
    x = 86,969,190.15/13,620.48
  6. Step 6: Final answer
    x = 6,385.18

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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.