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Finding the Fourth Proportional to 19,296.16, 28,943.12 and 7,447.61

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Solution

The fourth proportional to 19,296.16, 28,943.12 and 7,447.61 is: 11,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.16 : 28,943.12 = 7,447.61 : x
  2. Step 2: Convert to fraction form
    19,296.16/28,943.12 = 7,447.61/x
  3. Step 3: Cross multiply
    19,296.16x = 28,943.12 × 7,447.61
  4. Step 4: Simplify right side
    19,296.16x = 215,557,160.92
  5. Step 5: Solve for x
    x = 215,557,160.92/19,296.16
  6. Step 6: Final answer
    x = 11,170.99

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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.