Home / 20,755.56-28,503.45-17,771.40

Finding the Fourth Proportional to 20,755.56, 28,503.45 and 17,771.40

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Solution

The fourth proportional to 20,755.56, 28,503.45 and 17,771.40 is: 24,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.56 : 28,503.45 = 17,771.40 : x
  2. Step 2: Convert to fraction form
    20,755.56/28,503.45 = 17,771.40/x
  3. Step 3: Cross multiply
    20,755.56x = 28,503.45 × 17,771.40
  4. Step 4: Simplify right side
    20,755.56x = 506,546,211.33
  5. Step 5: Solve for x
    x = 506,546,211.33/20,755.56
  6. Step 6: Final answer
    x = 24,405.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.