Home / 19,780.67-27,299.50-12,610.85

Finding the Fourth Proportional to 19,780.67, 27,299.50 and 12,610.85

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Solution

The fourth proportional to 19,780.67, 27,299.50 and 12,610.85 is: 17,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.67 : 27,299.50 = 12,610.85 : x
  2. Step 2: Convert to fraction form
    19,780.67/27,299.50 = 12,610.85/x
  3. Step 3: Cross multiply
    19,780.67x = 27,299.50 × 12,610.85
  4. Step 4: Simplify right side
    19,780.67x = 344,269,817.25
  5. Step 5: Solve for x
    x = 344,269,817.25/19,780.67
  6. Step 6: Final answer
    x = 17,404.35

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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.