Home / 12,512.61-18,772.16-4,721.49

Finding the Fourth Proportional to 12,512.61, 18,772.16 and 4,721.49

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Solution

The fourth proportional to 12,512.61, 18,772.16 and 4,721.49 is: 7,083.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.61 : 18,772.16 = 4,721.49 : x
  2. Step 2: Convert to fraction form
    12,512.61/18,772.16 = 4,721.49/x
  3. Step 3: Cross multiply
    12,512.61x = 18,772.16 × 4,721.49
  4. Step 4: Simplify right side
    12,512.61x = 88,632,542.11
  5. Step 5: Solve for x
    x = 88,632,542.11/12,512.61
  6. Step 6: Final answer
    x = 7,083.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.