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Finding the Fourth Proportional to 18,393.54, 27,540.74 and 11,693.80

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Solution

The fourth proportional to 18,393.54, 27,540.74 and 11,693.80 is: 17,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.54 : 27,540.74 = 11,693.80 : x
  2. Step 2: Convert to fraction form
    18,393.54/27,540.74 = 11,693.80/x
  3. Step 3: Cross multiply
    18,393.54x = 27,540.74 × 11,693.80
  4. Step 4: Simplify right side
    18,393.54x = 322,055,925.22
  5. Step 5: Solve for x
    x = 322,055,925.22/18,393.54
  6. Step 6: Final answer
    x = 17,509.19

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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.