Home / 19,977.94-29,920.23-15,789.85

Finding the Fourth Proportional to 19,977.94, 29,920.23 and 15,789.85

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Solution

The fourth proportional to 19,977.94, 29,920.23 and 15,789.85 is: 23,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.94 : 29,920.23 = 15,789.85 : x
  2. Step 2: Convert to fraction form
    19,977.94/29,920.23 = 15,789.85/x
  3. Step 3: Cross multiply
    19,977.94x = 29,920.23 × 15,789.85
  4. Step 4: Simplify right side
    19,977.94x = 472,435,943.67
  5. Step 5: Solve for x
    x = 472,435,943.67/19,977.94
  6. Step 6: Final answer
    x = 23,647.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.