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Finding the Fourth Proportional to 19,896.92, 29,888.77 and 19,232.61

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Solution

The fourth proportional to 19,896.92, 29,888.77 and 19,232.61 is: 28,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,896.92 : 29,888.77 = 19,232.61 : x
  2. Step 2: Convert to fraction form
    19,896.92/29,888.77 = 19,232.61/x
  3. Step 3: Cross multiply
    19,896.92x = 29,888.77 × 19,232.61
  4. Step 4: Simplify right side
    19,896.92x = 574,839,238.96
  5. Step 5: Solve for x
    x = 574,839,238.96/19,896.92
  6. Step 6: Final answer
    x = 28,890.87

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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.