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Finding the Fourth Proportional to 19,369.68, 26,742.60 and 11,922

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Solution

The fourth proportional to 19,369.68, 26,742.60 and 11,922 is: 16,460.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.68 : 26,742.60 = 11,922 : x
  2. Step 2: Convert to fraction form
    19,369.68/26,742.60 = 11,922/x
  3. Step 3: Cross multiply
    19,369.68x = 26,742.60 × 11,922
  4. Step 4: Simplify right side
    19,369.68x = 318,825,277.20
  5. Step 5: Solve for x
    x = 318,825,277.20/19,369.68
  6. Step 6: Final answer
    x = 16,460.02

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1.5x scale

Why These Related Problems?

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