Home / 13,726.36-20,589.90-5,406.04

Finding the Fourth Proportional to 13,726.36, 20,589.90 and 5,406.04

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Solution

The fourth proportional to 13,726.36, 20,589.90 and 5,406.04 is: 8,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.36 : 20,589.90 = 5,406.04 : x
  2. Step 2: Convert to fraction form
    13,726.36/20,589.90 = 5,406.04/x
  3. Step 3: Cross multiply
    13,726.36x = 20,589.90 × 5,406.04
  4. Step 4: Simplify right side
    13,726.36x = 111,309,823.00
  5. Step 5: Solve for x
    x = 111,309,823.00/13,726.36
  6. Step 6: Final answer
    x = 8,109.20

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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.