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Finding the Fourth Proportional to 19,697.23, 27,188.24 and 12,145.93

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Solution

The fourth proportional to 19,697.23, 27,188.24 and 12,145.93 is: 16,765.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,697.23 : 27,188.24 = 12,145.93 : x
  2. Step 2: Convert to fraction form
    19,697.23/27,188.24 = 12,145.93/x
  3. Step 3: Cross multiply
    19,697.23x = 27,188.24 × 12,145.93
  4. Step 4: Simplify right side
    19,697.23x = 330,226,263.19
  5. Step 5: Solve for x
    x = 330,226,263.19/19,697.23
  6. Step 6: Final answer
    x = 16,765.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.