Home / 11,420.46-15,775.74-8,609.22

Finding the Fourth Proportional to 11,420.46, 15,775.74 and 8,609.22

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Solution

The fourth proportional to 11,420.46, 15,775.74 and 8,609.22 is: 11,892.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.46 : 15,775.74 = 8,609.22 : x
  2. Step 2: Convert to fraction form
    11,420.46/15,775.74 = 8,609.22/x
  3. Step 3: Cross multiply
    11,420.46x = 15,775.74 × 8,609.22
  4. Step 4: Simplify right side
    11,420.46x = 135,816,816.32
  5. Step 5: Solve for x
    x = 135,816,816.32/11,420.46
  6. Step 6: Final answer
    x = 11,892.41

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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.