Home / 11,227.20-16,840.80-7,310.40

Finding the Fourth Proportional to 11,227.20, 16,840.80 and 7,310.40

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Solution

The fourth proportional to 11,227.20, 16,840.80 and 7,310.40 is: 10,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,227.20 : 16,840.80 = 7,310.40 : x
  2. Step 2: Convert to fraction form
    11,227.20/16,840.80 = 7,310.40/x
  3. Step 3: Cross multiply
    11,227.20x = 16,840.80 × 7,310.40
  4. Step 4: Simplify right side
    11,227.20x = 123,112,984.32
  5. Step 5: Solve for x
    x = 123,112,984.32/11,227.20
  6. Step 6: Final answer
    x = 10,965.60

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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.