Home / 13,824.20-20,726.58-6,420.80

Finding the Fourth Proportional to 13,824.20, 20,726.58 and 6,420.80

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Solution

The fourth proportional to 13,824.20, 20,726.58 and 6,420.80 is: 9,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.20 : 20,726.58 = 6,420.80 : x
  2. Step 2: Convert to fraction form
    13,824.20/20,726.58 = 6,420.80/x
  3. Step 3: Cross multiply
    13,824.20x = 20,726.58 × 6,420.80
  4. Step 4: Simplify right side
    13,824.20x = 133,081,224.86
  5. Step 5: Solve for x
    x = 133,081,224.86/13,824.20
  6. Step 6: Final answer
    x = 9,626.69

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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.