Home / 11,156.90-16,740.18-4,229.78

Finding the Fourth Proportional to 11,156.90, 16,740.18 and 4,229.78

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Solution

The fourth proportional to 11,156.90, 16,740.18 and 4,229.78 is: 6,346.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.90 : 16,740.18 = 4,229.78 : x
  2. Step 2: Convert to fraction form
    11,156.90/16,740.18 = 4,229.78/x
  3. Step 3: Cross multiply
    11,156.90x = 16,740.18 × 4,229.78
  4. Step 4: Simplify right side
    11,156.90x = 70,807,278.56
  5. Step 5: Solve for x
    x = 70,807,278.56/11,156.90
  6. Step 6: Final answer
    x = 6,346.50

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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.