Home / 15,349.97-21,182.81-8,635.64

Finding the Fourth Proportional to 15,349.97, 21,182.81 and 8,635.64

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Solution

The fourth proportional to 15,349.97, 21,182.81 and 8,635.64 is: 11,917.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.97 : 21,182.81 = 8,635.64 : x
  2. Step 2: Convert to fraction form
    15,349.97/21,182.81 = 8,635.64/x
  3. Step 3: Cross multiply
    15,349.97x = 21,182.81 × 8,635.64
  4. Step 4: Simplify right side
    15,349.97x = 182,926,972.26
  5. Step 5: Solve for x
    x = 182,926,972.26/15,349.97
  6. Step 6: Final answer
    x = 11,917.09

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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.