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Finding the Fourth Proportional to 18,297.39, 27,424.91 and 8,415.93

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Solution

The fourth proportional to 18,297.39, 27,424.91 and 8,415.93 is: 12,614.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.39 : 27,424.91 = 8,415.93 : x
  2. Step 2: Convert to fraction form
    18,297.39/27,424.91 = 8,415.93/x
  3. Step 3: Cross multiply
    18,297.39x = 27,424.91 × 8,415.93
  4. Step 4: Simplify right side
    18,297.39x = 230,806,209.15
  5. Step 5: Solve for x
    x = 230,806,209.15/18,297.39
  6. Step 6: Final answer
    x = 12,614.16

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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.