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Finding the Fourth Proportional to 36,446.40, 54,626.40 and 18,907.20

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Solution

The fourth proportional to 36,446.40, 54,626.40 and 18,907.20 is: 28,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,446.40 : 54,626.40 = 18,907.20 : x
  2. Step 2: Convert to fraction form
    36,446.40/54,626.40 = 18,907.20/x
  3. Step 3: Cross multiply
    36,446.40x = 54,626.40 × 18,907.20
  4. Step 4: Simplify right side
    36,446.40x = 1,032,832,270.08
  5. Step 5: Solve for x
    x = 1,032,832,270.08/36,446.40
  6. Step 6: Final answer
    x = 28,338.39

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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.