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Finding the Fourth Proportional to 12,089.92, 18,123.94 and 4,296.91

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Solution

The fourth proportional to 12,089.92, 18,123.94 and 4,296.91 is: 6,441.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.92 : 18,123.94 = 4,296.91 : x
  2. Step 2: Convert to fraction form
    12,089.92/18,123.94 = 4,296.91/x
  3. Step 3: Cross multiply
    12,089.92x = 18,123.94 × 4,296.91
  4. Step 4: Simplify right side
    12,089.92x = 77,876,826.92
  5. Step 5: Solve for x
    x = 77,876,826.92/12,089.92
  6. Step 6: Final answer
    x = 6,441.47

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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.