Home / 18,743.98-28,123.74-8,208.55

Finding the Fourth Proportional to 18,743.98, 28,123.74 and 8,208.55

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Solution

The fourth proportional to 18,743.98, 28,123.74 and 8,208.55 is: 12,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.98 : 28,123.74 = 8,208.55 : x
  2. Step 2: Convert to fraction form
    18,743.98/28,123.74 = 8,208.55/x
  3. Step 3: Cross multiply
    18,743.98x = 28,123.74 × 8,208.55
  4. Step 4: Simplify right side
    18,743.98x = 230,855,084.93
  5. Step 5: Solve for x
    x = 230,855,084.93/18,743.98
  6. Step 6: Final answer
    x = 12,316.23

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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.