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Finding the Fourth Proportional to 18,392.71, 27,589.34 and 8,899.51

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Solution

The fourth proportional to 18,392.71, 27,589.34 and 8,899.51 is: 13,349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.71 : 27,589.34 = 8,899.51 : x
  2. Step 2: Convert to fraction form
    18,392.71/27,589.34 = 8,899.51/x
  3. Step 3: Cross multiply
    18,392.71x = 27,589.34 × 8,899.51
  4. Step 4: Simplify right side
    18,392.71x = 245,531,424.78
  5. Step 5: Solve for x
    x = 245,531,424.78/18,392.71
  6. Step 6: Final answer
    x = 13,349.39

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Half scale
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Double scale
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Similar ratio
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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.