Home / 20,207,522.20-30,311,283.30-18,648,628.60

Finding the Fourth Proportional to 20,207,522.20, 30,311,283.30 and 18,648,628.60

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Solution

The fourth proportional to 20,207,522.20, 30,311,283.30 and 18,648,628.60 is: 27,972,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207,522.20 : 30,311,283.30 = 18,648,628.60 : x
  2. Step 2: Convert to fraction form
    20,207,522.20/30,311,283.30 = 18,648,628.60/x
  3. Step 3: Cross multiply
    20,207,522.20x = 30,311,283.30 × 18,648,628.60
  4. Step 4: Simplify right side
    20,207,522.20x = 565,263,864,651,082.50
  5. Step 5: Solve for x
    x = 565,263,864,651,082.50/20,207,522.20
  6. Step 6: Final answer
    x = 27,972,942.90

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Double scale
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Similar ratio
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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.