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Finding the Fourth Proportional to 20,504.55, 30,756.82 and 4,922.17

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Solution

The fourth proportional to 20,504.55, 30,756.82 and 4,922.17 is: 7,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.55 : 30,756.82 = 4,922.17 : x
  2. Step 2: Convert to fraction form
    20,504.55/30,756.82 = 4,922.17/x
  3. Step 3: Cross multiply
    20,504.55x = 30,756.82 × 4,922.17
  4. Step 4: Simplify right side
    20,504.55x = 151,390,430.40
  5. Step 5: Solve for x
    x = 151,390,430.40/20,504.55
  6. Step 6: Final answer
    x = 7,383.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.