Home / 19,645.76-29,455.68-7,945.28

Finding the Fourth Proportional to 19,645.76, 29,455.68 and 7,945.28

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Solution

The fourth proportional to 19,645.76, 29,455.68 and 7,945.28 is: 11,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.76 : 29,455.68 = 7,945.28 : x
  2. Step 2: Convert to fraction form
    19,645.76/29,455.68 = 7,945.28/x
  3. Step 3: Cross multiply
    19,645.76x = 29,455.68 × 7,945.28
  4. Step 4: Simplify right side
    19,645.76x = 234,033,625.19
  5. Step 5: Solve for x
    x = 234,033,625.19/19,645.76
  6. Step 6: Final answer
    x = 11,912.68

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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.