Home / 11,439.03-17,164.43-8,664.78

Finding the Fourth Proportional to 11,439.03, 17,164.43 and 8,664.78

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Solution

The fourth proportional to 11,439.03, 17,164.43 and 8,664.78 is: 13,001.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.03 : 17,164.43 = 8,664.78 : x
  2. Step 2: Convert to fraction form
    11,439.03/17,164.43 = 8,664.78/x
  3. Step 3: Cross multiply
    11,439.03x = 17,164.43 × 8,664.78
  4. Step 4: Simplify right side
    11,439.03x = 148,725,966.45
  5. Step 5: Solve for x
    x = 148,725,966.45/11,439.03
  6. Step 6: Final answer
    x = 13,001.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.