Home / 13,027.20-19,540.80-8,102.40

Finding the Fourth Proportional to 13,027.20, 19,540.80 and 8,102.40

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Solution

The fourth proportional to 13,027.20, 19,540.80 and 8,102.40 is: 12,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,027.20 : 19,540.80 = 8,102.40 : x
  2. Step 2: Convert to fraction form
    13,027.20/19,540.80 = 8,102.40/x
  3. Step 3: Cross multiply
    13,027.20x = 19,540.80 × 8,102.40
  4. Step 4: Simplify right side
    13,027.20x = 158,327,377.92
  5. Step 5: Solve for x
    x = 158,327,377.92/13,027.20
  6. Step 6: Final answer
    x = 12,153.60

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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.