Home / 28,722.78-39,641.13-16,149.96

Finding the Fourth Proportional to 28,722.78, 39,641.13 and 16,149.96

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Solution

The fourth proportional to 28,722.78, 39,641.13 and 16,149.96 is: 22,289.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.78 : 39,641.13 = 16,149.96 : x
  2. Step 2: Convert to fraction form
    28,722.78/39,641.13 = 16,149.96/x
  3. Step 3: Cross multiply
    28,722.78x = 39,641.13 × 16,149.96
  4. Step 4: Simplify right side
    28,722.78x = 640,202,663.85
  5. Step 5: Solve for x
    x = 640,202,663.85/28,722.78
  6. Step 6: Final answer
    x = 22,289.02

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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.