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Finding the Fourth Proportional to 19,203.81, 28,785.92 and 7,354.35

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Solution

The fourth proportional to 19,203.81, 28,785.92 and 7,354.35 is: 11,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.81 : 28,785.92 = 7,354.35 : x
  2. Step 2: Convert to fraction form
    19,203.81/28,785.92 = 7,354.35/x
  3. Step 3: Cross multiply
    19,203.81x = 28,785.92 × 7,354.35
  4. Step 4: Simplify right side
    19,203.81x = 211,701,721.56
  5. Step 5: Solve for x
    x = 211,701,721.56/19,203.81
  6. Step 6: Final answer
    x = 11,023.95

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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.