Home / 11,166.72-15,409.68-6,451.20

Finding the Fourth Proportional to 11,166.72, 15,409.68 and 6,451.20

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Solution

The fourth proportional to 11,166.72, 15,409.68 and 6,451.20 is: 8,902.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,166.72 : 15,409.68 = 6,451.20 : x
  2. Step 2: Convert to fraction form
    11,166.72/15,409.68 = 6,451.20/x
  3. Step 3: Cross multiply
    11,166.72x = 15,409.68 × 6,451.20
  4. Step 4: Simplify right side
    11,166.72x = 99,410,927.62
  5. Step 5: Solve for x
    x = 99,410,927.62/11,166.72
  6. Step 6: Final answer
    x = 8,902.43

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Half scale
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Double scale
Find fourth proportional to 11,167.72, 15,411.06 and 6,452.20
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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.