Home / 19,174.05-28,755.81-12,143.52

Finding the Fourth Proportional to 19,174.05, 28,755.81 and 12,143.52

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Solution

The fourth proportional to 19,174.05, 28,755.81 and 12,143.52 is: 18,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.05 : 28,755.81 = 12,143.52 : x
  2. Step 2: Convert to fraction form
    19,174.05/28,755.81 = 12,143.52/x
  3. Step 3: Cross multiply
    19,174.05x = 28,755.81 × 12,143.52
  4. Step 4: Simplify right side
    19,174.05x = 349,196,753.85
  5. Step 5: Solve for x
    x = 349,196,753.85/19,174.05
  6. Step 6: Final answer
    x = 18,211.95

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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.