Home / 25,207.20-37,816.20-7,678.80

Finding the Fourth Proportional to 25,207.20, 37,816.20 and 7,678.80

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Solution

The fourth proportional to 25,207.20, 37,816.20 and 7,678.80 is: 11,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,207.20 : 37,816.20 = 7,678.80 : x
  2. Step 2: Convert to fraction form
    25,207.20/37,816.20 = 7,678.80/x
  3. Step 3: Cross multiply
    25,207.20x = 37,816.20 × 7,678.80
  4. Step 4: Simplify right side
    25,207.20x = 290,383,036.56
  5. Step 5: Solve for x
    x = 290,383,036.56/25,207.20
  6. Step 6: Final answer
    x = 11,519.84

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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.