Home / 13,449.40-20,174.10-8,492.20

Finding the Fourth Proportional to 13,449.40, 20,174.10 and 8,492.20

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Solution

The fourth proportional to 13,449.40, 20,174.10 and 8,492.20 is: 12,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.40 : 20,174.10 = 8,492.20 : x
  2. Step 2: Convert to fraction form
    13,449.40/20,174.10 = 8,492.20/x
  3. Step 3: Cross multiply
    13,449.40x = 20,174.10 × 8,492.20
  4. Step 4: Simplify right side
    13,449.40x = 171,322,492.02
  5. Step 5: Solve for x
    x = 171,322,492.02/13,449.40
  6. Step 6: Final answer
    x = 12,738.30

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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.