Home / 11,112.60-16,663.20-3,320.40

Finding the Fourth Proportional to 11,112.60, 16,663.20 and 3,320.40

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Solution

The fourth proportional to 11,112.60, 16,663.20 and 3,320.40 is: 4,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.60 : 16,663.20 = 3,320.40 : x
  2. Step 2: Convert to fraction form
    11,112.60/16,663.20 = 3,320.40/x
  3. Step 3: Cross multiply
    11,112.60x = 16,663.20 × 3,320.40
  4. Step 4: Simplify right side
    11,112.60x = 55,328,489.28
  5. Step 5: Solve for x
    x = 55,328,489.28/11,112.60
  6. Step 6: Final answer
    x = 4,978.90

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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.