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Finding the Fourth Proportional to 21,497.91, 32,163.43 and 18,845.46

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Solution

The fourth proportional to 21,497.91, 32,163.43 and 18,845.46 is: 28,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,497.91 : 32,163.43 = 18,845.46 : x
  2. Step 2: Convert to fraction form
    21,497.91/32,163.43 = 18,845.46/x
  3. Step 3: Cross multiply
    21,497.91x = 32,163.43 × 18,845.46
  4. Step 4: Simplify right side
    21,497.91x = 606,134,633.53
  5. Step 5: Solve for x
    x = 606,134,633.53/21,497.91
  6. Step 6: Final answer
    x = 28,195.05

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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.