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Finding the Fourth Proportional to 19,191.76, 28,775.33 and 13,252

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Solution

The fourth proportional to 19,191.76, 28,775.33 and 13,252 is: 19,869.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.76 : 28,775.33 = 13,252 : x
  2. Step 2: Convert to fraction form
    19,191.76/28,775.33 = 13,252/x
  3. Step 3: Cross multiply
    19,191.76x = 28,775.33 × 13,252
  4. Step 4: Simplify right side
    19,191.76x = 381,330,673.16
  5. Step 5: Solve for x
    x = 381,330,673.16/19,191.76
  6. Step 6: Final answer
    x = 19,869.51

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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.