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Finding the Fourth Proportional to 14,089.95, 19,443.62 and 8,121.87

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Solution

The fourth proportional to 14,089.95, 19,443.62 and 8,121.87 is: 11,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.95 : 19,443.62 = 8,121.87 : x
  2. Step 2: Convert to fraction form
    14,089.95/19,443.62 = 8,121.87/x
  3. Step 3: Cross multiply
    14,089.95x = 19,443.62 × 8,121.87
  4. Step 4: Simplify right side
    14,089.95x = 157,918,513.36
  5. Step 5: Solve for x
    x = 157,918,513.36/14,089.95
  6. Step 6: Final answer
    x = 11,207.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.