Home / 25,215.96-37,829.70-7,687.20

Finding the Fourth Proportional to 25,215.96, 37,829.70 and 7,687.20

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Solution

The fourth proportional to 25,215.96, 37,829.70 and 7,687.20 is: 11,532.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,215.96 : 37,829.70 = 7,687.20 : x
  2. Step 2: Convert to fraction form
    25,215.96/37,829.70 = 7,687.20/x
  3. Step 3: Cross multiply
    25,215.96x = 37,829.70 × 7,687.20
  4. Step 4: Simplify right side
    25,215.96x = 290,804,469.84
  5. Step 5: Solve for x
    x = 290,804,469.84/25,215.96
  6. Step 6: Final answer
    x = 11,532.56

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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.