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Finding the Fourth Proportional to 28,245.70, 38,982.52 and 16,309.01

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Solution

The fourth proportional to 28,245.70, 38,982.52 and 16,309.01 is: 22,508.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.70 : 38,982.52 = 16,309.01 : x
  2. Step 2: Convert to fraction form
    28,245.70/38,982.52 = 16,309.01/x
  3. Step 3: Cross multiply
    28,245.70x = 38,982.52 × 16,309.01
  4. Step 4: Simplify right side
    28,245.70x = 635,766,308.51
  5. Step 5: Solve for x
    x = 635,766,308.51/28,245.70
  6. Step 6: Final answer
    x = 22,508.43

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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.