Home / 19,930.20-29,897.46-7,456.20

Finding the Fourth Proportional to 19,930.20, 29,897.46 and 7,456.20

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Solution

The fourth proportional to 19,930.20, 29,897.46 and 7,456.20 is: 11,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.20 : 29,897.46 = 7,456.20 : x
  2. Step 2: Convert to fraction form
    19,930.20/29,897.46 = 7,456.20/x
  3. Step 3: Cross multiply
    19,930.20x = 29,897.46 × 7,456.20
  4. Step 4: Simplify right side
    19,930.20x = 222,921,441.25
  5. Step 5: Solve for x
    x = 222,921,441.25/19,930.20
  6. Step 6: Final answer
    x = 11,185.11

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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.