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Finding the Fourth Proportional to 19,292.91, 28,939.05 and 6,145.11

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Solution

The fourth proportional to 19,292.91, 28,939.05 and 6,145.11 is: 9,217.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,292.91 : 28,939.05 = 6,145.11 : x
  2. Step 2: Convert to fraction form
    19,292.91/28,939.05 = 6,145.11/x
  3. Step 3: Cross multiply
    19,292.91x = 28,939.05 × 6,145.11
  4. Step 4: Simplify right side
    19,292.91x = 177,833,645.55
  5. Step 5: Solve for x
    x = 177,833,645.55/19,292.91
  6. Step 6: Final answer
    x = 9,217.56

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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.