Home / 13,426.28-18,525.45-8,120.06

Finding the Fourth Proportional to 13,426.28, 18,525.45 and 8,120.06

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Solution

The fourth proportional to 13,426.28, 18,525.45 and 8,120.06 is: 11,203.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.28 : 18,525.45 = 8,120.06 : x
  2. Step 2: Convert to fraction form
    13,426.28/18,525.45 = 8,120.06/x
  3. Step 3: Cross multiply
    13,426.28x = 18,525.45 × 8,120.06
  4. Step 4: Simplify right side
    13,426.28x = 150,427,765.53
  5. Step 5: Solve for x
    x = 150,427,765.53/13,426.28
  6. Step 6: Final answer
    x = 11,203.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.