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Finding the Fourth Proportional to 20,938.03, 28,897.90 and 16,164.90

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Solution

The fourth proportional to 20,938.03, 28,897.90 and 16,164.90 is: 22,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.03 : 28,897.90 = 16,164.90 : x
  2. Step 2: Convert to fraction form
    20,938.03/28,897.90 = 16,164.90/x
  3. Step 3: Cross multiply
    20,938.03x = 28,897.90 × 16,164.90
  4. Step 4: Simplify right side
    20,938.03x = 467,131,623.30
  5. Step 5: Solve for x
    x = 467,131,623.30/20,938.03
  6. Step 6: Final answer
    x = 22,310.20

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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.