Home / 14,257.92-21,384-3,869.76

Finding the Fourth Proportional to 14,257.92, 21,384 and 3,869.76

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Solution

The fourth proportional to 14,257.92, 21,384 and 3,869.76 is: 5,803.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,257.92 : 21,384 = 3,869.76 : x
  2. Step 2: Convert to fraction form
    14,257.92/21,384 = 3,869.76/x
  3. Step 3: Cross multiply
    14,257.92x = 21,384 × 3,869.76
  4. Step 4: Simplify right side
    14,257.92x = 82,750,947.84
  5. Step 5: Solve for x
    x = 82,750,947.84/14,257.92
  6. Step 6: Final answer
    x = 5,803.86

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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.