Home / 18,721.80-25,838.46-10,763.28

Finding the Fourth Proportional to 18,721.80, 25,838.46 and 10,763.28

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Solution

The fourth proportional to 18,721.80, 25,838.46 and 10,763.28 is: 14,854.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.80 : 25,838.46 = 10,763.28 : x
  2. Step 2: Convert to fraction form
    18,721.80/25,838.46 = 10,763.28/x
  3. Step 3: Cross multiply
    18,721.80x = 25,838.46 × 10,763.28
  4. Step 4: Simplify right side
    18,721.80x = 278,106,579.75
  5. Step 5: Solve for x
    x = 278,106,579.75/18,721.80
  6. Step 6: Final answer
    x = 14,854.69

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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.