Home / 12,310.43-16,988.60-6,721.43

Finding the Fourth Proportional to 12,310.43, 16,988.60 and 6,721.43

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Solution

The fourth proportional to 12,310.43, 16,988.60 and 6,721.43 is: 9,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.43 : 16,988.60 = 6,721.43 : x
  2. Step 2: Convert to fraction form
    12,310.43/16,988.60 = 6,721.43/x
  3. Step 3: Cross multiply
    12,310.43x = 16,988.60 × 6,721.43
  4. Step 4: Simplify right side
    12,310.43x = 114,187,652.09
  5. Step 5: Solve for x
    x = 114,187,652.09/12,310.43
  6. Step 6: Final answer
    x = 9,275.68

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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.