Home / 11,216.20-15,477.45-6,500.78

Finding the Fourth Proportional to 11,216.20, 15,477.45 and 6,500.78

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Solution

The fourth proportional to 11,216.20, 15,477.45 and 6,500.78 is: 8,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.20 : 15,477.45 = 6,500.78 : x
  2. Step 2: Convert to fraction form
    11,216.20/15,477.45 = 6,500.78/x
  3. Step 3: Cross multiply
    11,216.20x = 15,477.45 × 6,500.78
  4. Step 4: Simplify right side
    11,216.20x = 100,615,497.41
  5. Step 5: Solve for x
    x = 100,615,497.41/11,216.20
  6. Step 6: Final answer
    x = 8,970.55

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Half scale
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Double scale
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Similar ratio
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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.