Home / 18,913.04-28,376.92-7,223.60

Finding the Fourth Proportional to 18,913.04, 28,376.92 and 7,223.60

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Solution

The fourth proportional to 18,913.04, 28,376.92 and 7,223.60 is: 10,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.04 : 28,376.92 = 7,223.60 : x
  2. Step 2: Convert to fraction form
    18,913.04/28,376.92 = 7,223.60/x
  3. Step 3: Cross multiply
    18,913.04x = 28,376.92 × 7,223.60
  4. Step 4: Simplify right side
    18,913.04x = 204,983,519.31
  5. Step 5: Solve for x
    x = 204,983,519.31/18,913.04
  6. Step 6: Final answer
    x = 10,838.21

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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.