Home / 12,116.43-16,720.38-6,738.90

Finding the Fourth Proportional to 12,116.43, 16,720.38 and 6,738.90

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Solution

The fourth proportional to 12,116.43, 16,720.38 and 6,738.90 is: 9,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.43 : 16,720.38 = 6,738.90 : x
  2. Step 2: Convert to fraction form
    12,116.43/16,720.38 = 6,738.90/x
  3. Step 3: Cross multiply
    12,116.43x = 16,720.38 × 6,738.90
  4. Step 4: Simplify right side
    12,116.43x = 112,676,968.78
  5. Step 5: Solve for x
    x = 112,676,968.78/12,116.43
  6. Step 6: Final answer
    x = 9,299.52

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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.