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Finding the Fourth Proportional to 19,374.85, 29,046.55 and 18,274.82

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Solution

The fourth proportional to 19,374.85, 29,046.55 and 18,274.82 is: 27,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,374.85 : 29,046.55 = 18,274.82 : x
  2. Step 2: Convert to fraction form
    19,374.85/29,046.55 = 18,274.82/x
  3. Step 3: Cross multiply
    19,374.85x = 29,046.55 × 18,274.82
  4. Step 4: Simplify right side
    19,374.85x = 530,820,316.22
  5. Step 5: Solve for x
    x = 530,820,316.22/19,374.85
  6. Step 6: Final answer
    x = 27,397.40

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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.