Home / 13,626.13-20,439.20-5,418.13

Finding the Fourth Proportional to 13,626.13, 20,439.20 and 5,418.13

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Solution

The fourth proportional to 13,626.13, 20,439.20 and 5,418.13 is: 8,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.13 : 20,439.20 = 5,418.13 : x
  2. Step 2: Convert to fraction form
    13,626.13/20,439.20 = 5,418.13/x
  3. Step 3: Cross multiply
    13,626.13x = 20,439.20 × 5,418.13
  4. Step 4: Simplify right side
    13,626.13x = 110,742,242.70
  5. Step 5: Solve for x
    x = 110,742,242.70/13,626.13
  6. Step 6: Final answer
    x = 8,127.20

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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.