Home / 15,348.49-21,180.71-8,634.12

Finding the Fourth Proportional to 15,348.49, 21,180.71 and 8,634.12

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Solution

The fourth proportional to 15,348.49, 21,180.71 and 8,634.12 is: 11,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.49 : 21,180.71 = 8,634.12 : x
  2. Step 2: Convert to fraction form
    15,348.49/21,180.71 = 8,634.12/x
  3. Step 3: Cross multiply
    15,348.49x = 21,180.71 × 8,634.12
  4. Step 4: Simplify right side
    15,348.49x = 182,876,642.75
  5. Step 5: Solve for x
    x = 182,876,642.75/15,348.49
  6. Step 6: Final answer
    x = 11,914.96

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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.