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Finding the Fourth Proportional to 19,840.71, 27,380.10 and 10,888.36

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Solution

The fourth proportional to 19,840.71, 27,380.10 and 10,888.36 is: 15,025.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.71 : 27,380.10 = 10,888.36 : x
  2. Step 2: Convert to fraction form
    19,840.71/27,380.10 = 10,888.36/x
  3. Step 3: Cross multiply
    19,840.71x = 27,380.10 × 10,888.36
  4. Step 4: Simplify right side
    19,840.71x = 298,124,385.64
  5. Step 5: Solve for x
    x = 298,124,385.64/19,840.71
  6. Step 6: Final answer
    x = 15,025.89

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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.