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Finding the Fourth Proportional to 20,882.88, 28,790.50 and 16,590.22

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Solution

The fourth proportional to 20,882.88, 28,790.50 and 16,590.22 is: 22,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.88 : 28,790.50 = 16,590.22 : x
  2. Step 2: Convert to fraction form
    20,882.88/28,790.50 = 16,590.22/x
  3. Step 3: Cross multiply
    20,882.88x = 28,790.50 × 16,590.22
  4. Step 4: Simplify right side
    20,882.88x = 477,640,656.93
  5. Step 5: Solve for x
    x = 477,640,656.93/20,882.88
  6. Step 6: Final answer
    x = 22,872.35

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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.