Home / 18,988.92-28,497.30-7,153.80

Finding the Fourth Proportional to 18,988.92, 28,497.30 and 7,153.80

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Solution

The fourth proportional to 18,988.92, 28,497.30 and 7,153.80 is: 10,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.92 : 28,497.30 = 7,153.80 : x
  2. Step 2: Convert to fraction form
    18,988.92/28,497.30 = 7,153.80/x
  3. Step 3: Cross multiply
    18,988.92x = 28,497.30 × 7,153.80
  4. Step 4: Simplify right side
    18,988.92x = 203,863,984.74
  5. Step 5: Solve for x
    x = 203,863,984.74/18,988.92
  6. Step 6: Final answer
    x = 10,735.94

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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.