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Finding the Fourth Proportional to 19,385.97, 29,078.94 and 5,534.97

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Solution

The fourth proportional to 19,385.97, 29,078.94 and 5,534.97 is: 8,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.97 : 29,078.94 = 5,534.97 : x
  2. Step 2: Convert to fraction form
    19,385.97/29,078.94 = 5,534.97/x
  3. Step 3: Cross multiply
    19,385.97x = 29,078.94 × 5,534.97
  4. Step 4: Simplify right side
    19,385.97x = 160,950,915.14
  5. Step 5: Solve for x
    x = 160,950,915.14/19,385.97
  6. Step 6: Final answer
    x = 8,302.45

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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.