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Finding the Fourth Proportional to 18,398.40, 27,601.42 and 5,919.36

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Solution

The fourth proportional to 18,398.40, 27,601.42 and 5,919.36 is: 8,880.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.40 : 27,601.42 = 5,919.36 : x
  2. Step 2: Convert to fraction form
    18,398.40/27,601.42 = 5,919.36/x
  3. Step 3: Cross multiply
    18,398.40x = 27,601.42 × 5,919.36
  4. Step 4: Simplify right side
    18,398.40x = 163,382,741.49
  5. Step 5: Solve for x
    x = 163,382,741.49/18,398.40
  6. Step 6: Final answer
    x = 8,880.27

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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.