Home / 13,626.56-20,439-4,266.32

Finding the Fourth Proportional to 13,626.56, 20,439 and 4,266.32

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Solution

The fourth proportional to 13,626.56, 20,439 and 4,266.32 is: 6,399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.56 : 20,439 = 4,266.32 : x
  2. Step 2: Convert to fraction form
    13,626.56/20,439 = 4,266.32/x
  3. Step 3: Cross multiply
    13,626.56x = 20,439 × 4,266.32
  4. Step 4: Simplify right side
    13,626.56x = 87,199,314.48
  5. Step 5: Solve for x
    x = 87,199,314.48/13,626.56
  6. Step 6: Final answer
    x = 6,399.22

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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.