Home / 11,276.76-15,566.40-8,137.20

Finding the Fourth Proportional to 11,276.76, 15,566.40 and 8,137.20

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Solution

The fourth proportional to 11,276.76, 15,566.40 and 8,137.20 is: 11,232.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,276.76 : 15,566.40 = 8,137.20 : x
  2. Step 2: Convert to fraction form
    11,276.76/15,566.40 = 8,137.20/x
  3. Step 3: Cross multiply
    11,276.76x = 15,566.40 × 8,137.20
  4. Step 4: Simplify right side
    11,276.76x = 126,666,910.08
  5. Step 5: Solve for x
    x = 126,666,910.08/11,276.76
  6. Step 6: Final answer
    x = 11,232.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.