Home / 28,921.61-39,911.54-16,174.65

Finding the Fourth Proportional to 28,921.61, 39,911.54 and 16,174.65

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Solution

The fourth proportional to 28,921.61, 39,911.54 and 16,174.65 is: 22,320.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.61 : 39,911.54 = 16,174.65 : x
  2. Step 2: Convert to fraction form
    28,921.61/39,911.54 = 16,174.65/x
  3. Step 3: Cross multiply
    28,921.61x = 39,911.54 × 16,174.65
  4. Step 4: Simplify right side
    28,921.61x = 645,555,230.90
  5. Step 5: Solve for x
    x = 645,555,230.90/28,921.61
  6. Step 6: Final answer
    x = 22,320.86

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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.