Home / 19,786.48-29,679.72-7,945.68

Finding the Fourth Proportional to 19,786.48, 29,679.72 and 7,945.68

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Solution

The fourth proportional to 19,786.48, 29,679.72 and 7,945.68 is: 11,918.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.48 : 29,679.72 = 7,945.68 : x
  2. Step 2: Convert to fraction form
    19,786.48/29,679.72 = 7,945.68/x
  3. Step 3: Cross multiply
    19,786.48x = 29,679.72 × 7,945.68
  4. Step 4: Simplify right side
    19,786.48x = 235,825,557.61
  5. Step 5: Solve for x
    x = 235,825,557.61/19,786.48
  6. Step 6: Final answer
    x = 11,918.52

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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.