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Finding the Fourth Proportional to 19,230.86, 28,842.71 and 15,504.39

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Solution

The fourth proportional to 19,230.86, 28,842.71 and 15,504.39 is: 23,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.86 : 28,842.71 = 15,504.39 : x
  2. Step 2: Convert to fraction form
    19,230.86/28,842.71 = 15,504.39/x
  3. Step 3: Cross multiply
    19,230.86x = 28,842.71 × 15,504.39
  4. Step 4: Simplify right side
    19,230.86x = 447,188,546.97
  5. Step 5: Solve for x
    x = 447,188,546.97/19,230.86
  6. Step 6: Final answer
    x = 23,253.70

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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.