Home / 19,907.40-29,854.62-8,813.85

Finding the Fourth Proportional to 19,907.40, 29,854.62 and 8,813.85

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Solution

The fourth proportional to 19,907.40, 29,854.62 and 8,813.85 is: 13,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.40 : 29,854.62 = 8,813.85 : x
  2. Step 2: Convert to fraction form
    19,907.40/29,854.62 = 8,813.85/x
  3. Step 3: Cross multiply
    19,907.40x = 29,854.62 × 8,813.85
  4. Step 4: Simplify right side
    19,907.40x = 263,134,142.49
  5. Step 5: Solve for x
    x = 263,134,142.49/19,907.40
  6. Step 6: Final answer
    x = 13,217.91

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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.