Home / 21,511.24-29,688.73-15,481.44

Finding the Fourth Proportional to 21,511.24, 29,688.73 and 15,481.44

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Solution

The fourth proportional to 21,511.24, 29,688.73 and 15,481.44 is: 21,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.24 : 29,688.73 = 15,481.44 : x
  2. Step 2: Convert to fraction form
    21,511.24/29,688.73 = 15,481.44/x
  3. Step 3: Cross multiply
    21,511.24x = 29,688.73 × 15,481.44
  4. Step 4: Simplify right side
    21,511.24x = 459,624,253.47
  5. Step 5: Solve for x
    x = 459,624,253.47/21,511.24
  6. Step 6: Final answer
    x = 21,366.70

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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.