Home / 19,616.40-29,419.20-7,930.80

Finding the Fourth Proportional to 19,616.40, 29,419.20 and 7,930.80

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Solution

The fourth proportional to 19,616.40, 29,419.20 and 7,930.80 is: 11,894.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.40 : 29,419.20 = 7,930.80 : x
  2. Step 2: Convert to fraction form
    19,616.40/29,419.20 = 7,930.80/x
  3. Step 3: Cross multiply
    19,616.40x = 29,419.20 × 7,930.80
  4. Step 4: Simplify right side
    19,616.40x = 233,317,791.36
  5. Step 5: Solve for x
    x = 233,317,791.36/19,616.40
  6. Step 6: Final answer
    x = 11,894.02

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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.