Home / 12,619.98-18,930.51-4,721.76

Finding the Fourth Proportional to 12,619.98, 18,930.51 and 4,721.76

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Solution

The fourth proportional to 12,619.98, 18,930.51 and 4,721.76 is: 7,082.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.98 : 18,930.51 = 4,721.76 : x
  2. Step 2: Convert to fraction form
    12,619.98/18,930.51 = 4,721.76/x
  3. Step 3: Cross multiply
    12,619.98x = 18,930.51 × 4,721.76
  4. Step 4: Simplify right side
    12,619.98x = 89,385,324.90
  5. Step 5: Solve for x
    x = 89,385,324.90/12,619.98
  6. Step 6: Final answer
    x = 7,082.84

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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.