Home / 15,349.49-21,180.58-8,634.97

Finding the Fourth Proportional to 15,349.49, 21,180.58 and 8,634.97

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Solution

The fourth proportional to 15,349.49, 21,180.58 and 8,634.97 is: 11,915.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.49 : 21,180.58 = 8,634.97 : x
  2. Step 2: Convert to fraction form
    15,349.49/21,180.58 = 8,634.97/x
  3. Step 3: Cross multiply
    15,349.49x = 21,180.58 × 8,634.97
  4. Step 4: Simplify right side
    15,349.49x = 182,893,672.88
  5. Step 5: Solve for x
    x = 182,893,672.88/15,349.49
  6. Step 6: Final answer
    x = 11,915.29

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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.