Home / 12,695.70-19,045.38-3,931.38

Finding the Fourth Proportional to 12,695.70, 19,045.38 and 3,931.38

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Solution

The fourth proportional to 12,695.70, 19,045.38 and 3,931.38 is: 5,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.70 : 19,045.38 = 3,931.38 : x
  2. Step 2: Convert to fraction form
    12,695.70/19,045.38 = 3,931.38/x
  3. Step 3: Cross multiply
    12,695.70x = 19,045.38 × 3,931.38
  4. Step 4: Simplify right side
    12,695.70x = 74,874,626.02
  5. Step 5: Solve for x
    x = 74,874,626.02/12,695.70
  6. Step 6: Final answer
    x = 5,897.64

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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.