Home / 19,880.97-29,826.33-9,890.43

Finding the Fourth Proportional to 19,880.97, 29,826.33 and 9,890.43

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Solution

The fourth proportional to 19,880.97, 29,826.33 and 9,890.43 is: 14,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.97 : 29,826.33 = 9,890.43 : x
  2. Step 2: Convert to fraction form
    19,880.97/29,826.33 = 9,890.43/x
  3. Step 3: Cross multiply
    19,880.97x = 29,826.33 × 9,890.43
  4. Step 4: Simplify right side
    19,880.97x = 294,995,229.02
  5. Step 5: Solve for x
    x = 294,995,229.02/19,880.97
  6. Step 6: Final answer
    x = 14,838.07

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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.