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Finding the Fourth Proportional to 28,195.70, 38,910.05 and 16,258.87

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Solution

The fourth proportional to 28,195.70, 38,910.05 and 16,258.87 is: 22,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.70 : 38,910.05 = 16,258.87 : x
  2. Step 2: Convert to fraction form
    28,195.70/38,910.05 = 16,258.87/x
  3. Step 3: Cross multiply
    28,195.70x = 38,910.05 × 16,258.87
  4. Step 4: Simplify right side
    28,195.70x = 632,633,250.09
  5. Step 5: Solve for x
    x = 632,633,250.09/28,195.70
  6. Step 6: Final answer
    x = 22,437.22

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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.