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Finding the Fourth Proportional to 20,010.40, 29,942.70 and 18,260.80

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Solution

The fourth proportional to 20,010.40, 29,942.70 and 18,260.80 is: 27,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,010.40 : 29,942.70 = 18,260.80 : x
  2. Step 2: Convert to fraction form
    20,010.40/29,942.70 = 18,260.80/x
  3. Step 3: Cross multiply
    20,010.40x = 29,942.70 × 18,260.80
  4. Step 4: Simplify right side
    20,010.40x = 546,777,656.16
  5. Step 5: Solve for x
    x = 546,777,656.16/20,010.40
  6. Step 6: Final answer
    x = 27,324.67

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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.