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Finding the Fourth Proportional to 19,270.40, 28,906.40 and 6,122.40

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Solution

The fourth proportional to 19,270.40, 28,906.40 and 6,122.40 is: 9,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.40 : 28,906.40 = 6,122.40 : x
  2. Step 2: Convert to fraction form
    19,270.40/28,906.40 = 6,122.40/x
  3. Step 3: Cross multiply
    19,270.40x = 28,906.40 × 6,122.40
  4. Step 4: Simplify right side
    19,270.40x = 176,976,543.36
  5. Step 5: Solve for x
    x = 176,976,543.36/19,270.40
  6. Step 6: Final answer
    x = 9,183.85

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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.