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Finding the Fourth Proportional to 14,218.76, 19,621.95 and 7,845.42

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Solution

The fourth proportional to 14,218.76, 19,621.95 and 7,845.42 is: 10,826.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.76 : 19,621.95 = 7,845.42 : x
  2. Step 2: Convert to fraction form
    14,218.76/19,621.95 = 7,845.42/x
  3. Step 3: Cross multiply
    14,218.76x = 19,621.95 × 7,845.42
  4. Step 4: Simplify right side
    14,218.76x = 153,942,438.97
  5. Step 5: Solve for x
    x = 153,942,438.97/14,218.76
  6. Step 6: Final answer
    x = 10,826.71

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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.