Home / 15,348.49-21,179.73-8,632.78

Finding the Fourth Proportional to 15,348.49, 21,179.73 and 8,632.78

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Solution

The fourth proportional to 15,348.49, 21,179.73 and 8,632.78 is: 11,912.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.49 : 21,179.73 = 8,632.78 : x
  2. Step 2: Convert to fraction form
    15,348.49/21,179.73 = 8,632.78/x
  3. Step 3: Cross multiply
    15,348.49x = 21,179.73 × 8,632.78
  4. Step 4: Simplify right side
    15,348.49x = 182,839,880.41
  5. Step 5: Solve for x
    x = 182,839,880.41/15,348.49
  6. Step 6: Final answer
    x = 11,912.57

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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.