Home / 11,013.36-15,204.32-8,489.96

Finding the Fourth Proportional to 11,013.36, 15,204.32 and 8,489.96

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Solution

The fourth proportional to 11,013.36, 15,204.32 and 8,489.96 is: 11,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,013.36 : 15,204.32 = 8,489.96 : x
  2. Step 2: Convert to fraction form
    11,013.36/15,204.32 = 8,489.96/x
  3. Step 3: Cross multiply
    11,013.36x = 15,204.32 × 8,489.96
  4. Step 4: Simplify right side
    11,013.36x = 129,084,068.63
  5. Step 5: Solve for x
    x = 129,084,068.63/11,013.36
  6. Step 6: Final answer
    x = 11,720.68

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Double scale
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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.