Home / 15,961.78-23,935.71-5,428.94

Finding the Fourth Proportional to 15,961.78, 23,935.71 and 5,428.94

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Solution

The fourth proportional to 15,961.78, 23,935.71 and 5,428.94 is: 8,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.78 : 23,935.71 = 5,428.94 : x
  2. Step 2: Convert to fraction form
    15,961.78/23,935.71 = 5,428.94/x
  3. Step 3: Cross multiply
    15,961.78x = 23,935.71 × 5,428.94
  4. Step 4: Simplify right side
    15,961.78x = 129,945,533.45
  5. Step 5: Solve for x
    x = 129,945,533.45/15,961.78
  6. Step 6: Final answer
    x = 8,141.05

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Why These Related Problems?

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