Home / 15,348.99-21,182.83-8,634.21

Finding the Fourth Proportional to 15,348.99, 21,182.83 and 8,634.21

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Solution

The fourth proportional to 15,348.99, 21,182.83 and 8,634.21 is: 11,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.99 : 21,182.83 = 8,634.21 : x
  2. Step 2: Convert to fraction form
    15,348.99/21,182.83 = 8,634.21/x
  3. Step 3: Cross multiply
    15,348.99x = 21,182.83 × 8,634.21
  4. Step 4: Simplify right side
    15,348.99x = 182,897,060.97
  5. Step 5: Solve for x
    x = 182,897,060.97/15,348.99
  6. Step 6: Final answer
    x = 11,915.90

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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.