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Finding the Fourth Proportional to 19,893.62, 27,446.47 and 11,278.89

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Solution

The fourth proportional to 19,893.62, 27,446.47 and 11,278.89 is: 15,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.62 : 27,446.47 = 11,278.89 : x
  2. Step 2: Convert to fraction form
    19,893.62/27,446.47 = 11,278.89/x
  3. Step 3: Cross multiply
    19,893.62x = 27,446.47 × 11,278.89
  4. Step 4: Simplify right side
    19,893.62x = 309,565,687.82
  5. Step 5: Solve for x
    x = 309,565,687.82/19,893.62
  6. Step 6: Final answer
    x = 15,561.05

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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.