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Finding the Fourth Proportional to 25,110.40, 37,660.80 and 7,580.80

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Solution

The fourth proportional to 25,110.40, 37,660.80 and 7,580.80 is: 11,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,110.40 : 37,660.80 = 7,580.80 : x
  2. Step 2: Convert to fraction form
    25,110.40/37,660.80 = 7,580.80/x
  3. Step 3: Cross multiply
    25,110.40x = 37,660.80 × 7,580.80
  4. Step 4: Simplify right side
    25,110.40x = 285,498,992.64
  5. Step 5: Solve for x
    x = 285,498,992.64/25,110.40
  6. Step 6: Final answer
    x = 11,369.75

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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.