Home / 19,679.26-27,139.68-12,962.46

Finding the Fourth Proportional to 19,679.26, 27,139.68 and 12,962.46

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Solution

The fourth proportional to 19,679.26, 27,139.68 and 12,962.46 is: 17,876.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.26 : 27,139.68 = 12,962.46 : x
  2. Step 2: Convert to fraction form
    19,679.26/27,139.68 = 12,962.46/x
  3. Step 3: Cross multiply
    19,679.26x = 27,139.68 × 12,962.46
  4. Step 4: Simplify right side
    19,679.26x = 351,797,016.41
  5. Step 5: Solve for x
    x = 351,797,016.41/19,679.26
  6. Step 6: Final answer
    x = 17,876.54

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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.