Home / 12,868.50-19,302.18-4,974.78

Finding the Fourth Proportional to 12,868.50, 19,302.18 and 4,974.78

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Solution

The fourth proportional to 12,868.50, 19,302.18 and 4,974.78 is: 7,461.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.50 : 19,302.18 = 4,974.78 : x
  2. Step 2: Convert to fraction form
    12,868.50/19,302.18 = 4,974.78/x
  3. Step 3: Cross multiply
    12,868.50x = 19,302.18 × 4,974.78
  4. Step 4: Simplify right side
    12,868.50x = 96,024,099.02
  5. Step 5: Solve for x
    x = 96,024,099.02/12,868.50
  6. Step 6: Final answer
    x = 7,461.95

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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.