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Finding the Fourth Proportional to 25,197.78, 37,789.90 and 7,662.90

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Solution

The fourth proportional to 25,197.78, 37,789.90 and 7,662.90 is: 11,492.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,197.78 : 37,789.90 = 7,662.90 : x
  2. Step 2: Convert to fraction form
    25,197.78/37,789.90 = 7,662.90/x
  3. Step 3: Cross multiply
    25,197.78x = 37,789.90 × 7,662.90
  4. Step 4: Simplify right side
    25,197.78x = 289,580,224.71
  5. Step 5: Solve for x
    x = 289,580,224.71/25,197.78
  6. Step 6: Final answer
    x = 11,492.29

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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.