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Finding the Fourth Proportional to 18,555.16, 27,782.52 and 13,587.16

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Solution

The fourth proportional to 18,555.16, 27,782.52 and 13,587.16 is: 20,343.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.16 : 27,782.52 = 13,587.16 : x
  2. Step 2: Convert to fraction form
    18,555.16/27,782.52 = 13,587.16/x
  3. Step 3: Cross multiply
    18,555.16x = 27,782.52 × 13,587.16
  4. Step 4: Simplify right side
    18,555.16x = 377,485,544.44
  5. Step 5: Solve for x
    x = 377,485,544.44/18,555.16
  6. Step 6: Final answer
    x = 20,343.97

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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.