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Finding the Fourth Proportional to 19,253.86, 28,891.59 and 10,489.39

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Solution

The fourth proportional to 19,253.86, 28,891.59 and 10,489.39 is: 15,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253.86 : 28,891.59 = 10,489.39 : x
  2. Step 2: Convert to fraction form
    19,253.86/28,891.59 = 10,489.39/x
  3. Step 3: Cross multiply
    19,253.86x = 28,891.59 × 10,489.39
  4. Step 4: Simplify right side
    19,253.86x = 303,055,043.67
  5. Step 5: Solve for x
    x = 303,055,043.67/19,253.86
  6. Step 6: Final answer
    x = 15,739.97

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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.