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Finding the Fourth Proportional to 28,249.96, 38,992.00 and 16,320.22

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Solution

The fourth proportional to 28,249.96, 38,992.00 and 16,320.22 is: 22,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.96 : 38,992.00 = 16,320.22 : x
  2. Step 2: Convert to fraction form
    28,249.96/38,992.00 = 16,320.22/x
  3. Step 3: Cross multiply
    28,249.96x = 38,992.00 × 16,320.22
  4. Step 4: Simplify right side
    28,249.96x = 636,357,936.64
  5. Step 5: Solve for x
    x = 636,357,936.64/28,249.96
  6. Step 6: Final answer
    x = 22,525.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.