Home / 12,488.70-18,731.34-4,168.53

Finding the Fourth Proportional to 12,488.70, 18,731.34 and 4,168.53

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Solution

The fourth proportional to 12,488.70, 18,731.34 and 4,168.53 is: 6,252.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.70 : 18,731.34 = 4,168.53 : x
  2. Step 2: Convert to fraction form
    12,488.70/18,731.34 = 4,168.53/x
  3. Step 3: Cross multiply
    12,488.70x = 18,731.34 × 4,168.53
  4. Step 4: Simplify right side
    12,488.70x = 78,082,152.73
  5. Step 5: Solve for x
    x = 78,082,152.73/12,488.70
  6. Step 6: Final answer
    x = 6,252.22

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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.