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Finding the Fourth Proportional to 19,297.66, 28,930.08 and 18,379.12

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Solution

The fourth proportional to 19,297.66, 28,930.08 and 18,379.12 is: 27,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,297.66 : 28,930.08 = 18,379.12 : x
  2. Step 2: Convert to fraction form
    19,297.66/28,930.08 = 18,379.12/x
  3. Step 3: Cross multiply
    19,297.66x = 28,930.08 × 18,379.12
  4. Step 4: Simplify right side
    19,297.66x = 531,709,411.93
  5. Step 5: Solve for x
    x = 531,709,411.93/19,297.66
  6. Step 6: Final answer
    x = 27,553.05

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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.