Home / 12,715.38-19,072.84-3,950.30

Finding the Fourth Proportional to 12,715.38, 19,072.84 and 3,950.30

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Solution

The fourth proportional to 12,715.38, 19,072.84 and 3,950.30 is: 5,925.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.38 : 19,072.84 = 3,950.30 : x
  2. Step 2: Convert to fraction form
    12,715.38/19,072.84 = 3,950.30/x
  3. Step 3: Cross multiply
    12,715.38x = 19,072.84 × 3,950.30
  4. Step 4: Simplify right side
    12,715.38x = 75,343,439.85
  5. Step 5: Solve for x
    x = 75,343,439.85/12,715.38
  6. Step 6: Final answer
    x = 5,925.38

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1.5x scale

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.