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Finding the Fourth Proportional to 19,862.63, 29,793.93 and 7,385.79

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Solution

The fourth proportional to 19,862.63, 29,793.93 and 7,385.79 is: 11,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,862.63 : 29,793.93 = 7,385.79 : x
  2. Step 2: Convert to fraction form
    19,862.63/29,793.93 = 7,385.79/x
  3. Step 3: Cross multiply
    19,862.63x = 29,793.93 × 7,385.79
  4. Step 4: Simplify right side
    19,862.63x = 220,051,710.25
  5. Step 5: Solve for x
    x = 220,051,710.25/19,862.63
  6. Step 6: Final answer
    x = 11,078.68

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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.