Home / 12,170.60-18,243.30-6,612.20

Finding the Fourth Proportional to 12,170.60, 18,243.30 and 6,612.20

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Solution

The fourth proportional to 12,170.60, 18,243.30 and 6,612.20 is: 9,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.60 : 18,243.30 = 6,612.20 : x
  2. Step 2: Convert to fraction form
    12,170.60/18,243.30 = 6,612.20/x
  3. Step 3: Cross multiply
    12,170.60x = 18,243.30 × 6,612.20
  4. Step 4: Simplify right side
    12,170.60x = 120,628,348.26
  5. Step 5: Solve for x
    x = 120,628,348.26/12,170.60
  6. Step 6: Final answer
    x = 9,911.45

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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.