Home / 20,916.84-28,867.84-11,963.10

Finding the Fourth Proportional to 20,916.84, 28,867.84 and 11,963.10

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Solution

The fourth proportional to 20,916.84, 28,867.84 and 11,963.10 is: 16,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.84 : 28,867.84 = 11,963.10 : x
  2. Step 2: Convert to fraction form
    20,916.84/28,867.84 = 11,963.10/x
  3. Step 3: Cross multiply
    20,916.84x = 28,867.84 × 11,963.10
  4. Step 4: Simplify right side
    20,916.84x = 345,348,856.70
  5. Step 5: Solve for x
    x = 345,348,856.70/20,916.84
  6. Step 6: Final answer
    x = 16,510.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.