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Finding the Fourth Proportional to 18,697.10, 28,058.81 and 16,910.51

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Solution

The fourth proportional to 18,697.10, 28,058.81 and 16,910.51 is: 25,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.10 : 28,058.81 = 16,910.51 : x
  2. Step 2: Convert to fraction form
    18,697.10/28,058.81 = 16,910.51/x
  3. Step 3: Cross multiply
    18,697.10x = 28,058.81 × 16,910.51
  4. Step 4: Simplify right side
    18,697.10x = 474,488,562.25
  5. Step 5: Solve for x
    x = 474,488,562.25/18,697.10
  6. Step 6: Final answer
    x = 25,377.66

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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.