Home / 19,788.71-29,682.75-7,945.49

Finding the Fourth Proportional to 19,788.71, 29,682.75 and 7,945.49

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Solution

The fourth proportional to 19,788.71, 29,682.75 and 7,945.49 is: 11,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.71 : 29,682.75 = 7,945.49 : x
  2. Step 2: Convert to fraction form
    19,788.71/29,682.75 = 7,945.49/x
  3. Step 3: Cross multiply
    19,788.71x = 29,682.75 × 7,945.49
  4. Step 4: Simplify right side
    19,788.71x = 235,844,097.30
  5. Step 5: Solve for x
    x = 235,844,097.30/19,788.71
  6. Step 6: Final answer
    x = 11,918.12

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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.