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Finding the Fourth Proportional to 19,385.47, 29,078.19 and 5,534.47

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Solution

The fourth proportional to 19,385.47, 29,078.19 and 5,534.47 is: 8,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.47 : 29,078.19 = 5,534.47 : x
  2. Step 2: Convert to fraction form
    19,385.47/29,078.19 = 5,534.47/x
  3. Step 3: Cross multiply
    19,385.47x = 29,078.19 × 5,534.47
  4. Step 4: Simplify right side
    19,385.47x = 160,932,224.82
  5. Step 5: Solve for x
    x = 160,932,224.82/19,385.47
  6. Step 6: Final answer
    x = 8,301.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.