Home / 12,489.74-17,236.23-6,824.80

Finding the Fourth Proportional to 12,489.74, 17,236.23 and 6,824.80

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Solution

The fourth proportional to 12,489.74, 17,236.23 and 6,824.80 is: 9,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.74 : 17,236.23 = 6,824.80 : x
  2. Step 2: Convert to fraction form
    12,489.74/17,236.23 = 6,824.80/x
  3. Step 3: Cross multiply
    12,489.74x = 17,236.23 × 6,824.80
  4. Step 4: Simplify right side
    12,489.74x = 117,633,779.41
  5. Step 5: Solve for x
    x = 117,633,779.41/12,489.74
  6. Step 6: Final answer
    x = 9,418.44

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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.