Home / 42,949.70-64,426.17-11,787.38

Finding the Fourth Proportional to 42,949.70, 64,426.17 and 11,787.38

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Solution

The fourth proportional to 42,949.70, 64,426.17 and 11,787.38 is: 17,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,949.70 : 64,426.17 = 11,787.38 : x
  2. Step 2: Convert to fraction form
    42,949.70/64,426.17 = 11,787.38/x
  3. Step 3: Cross multiply
    42,949.70x = 64,426.17 × 11,787.38
  4. Step 4: Simplify right side
    42,949.70x = 759,415,747.73
  5. Step 5: Solve for x
    x = 759,415,747.73/42,949.70
  6. Step 6: Final answer
    x = 17,681.51

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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.