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Finding the Fourth Proportional to 25,229.20, 37,851.90 and 7,700.80

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Solution

The fourth proportional to 25,229.20, 37,851.90 and 7,700.80 is: 11,553.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,229.20 : 37,851.90 = 7,700.80 : x
  2. Step 2: Convert to fraction form
    25,229.20/37,851.90 = 7,700.80/x
  3. Step 3: Cross multiply
    25,229.20x = 37,851.90 × 7,700.80
  4. Step 4: Simplify right side
    25,229.20x = 291,489,911.52
  5. Step 5: Solve for x
    x = 291,489,911.52/25,229.20
  6. Step 6: Final answer
    x = 11,553.67

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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.