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Finding the Fourth Proportional to 34,283.40, 47,310.18 and 19,379.40

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Solution

The fourth proportional to 34,283.40, 47,310.18 and 19,379.40 is: 26,743.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,283.40 : 47,310.18 = 19,379.40 : x
  2. Step 2: Convert to fraction form
    34,283.40/47,310.18 = 19,379.40/x
  3. Step 3: Cross multiply
    34,283.40x = 47,310.18 × 19,379.40
  4. Step 4: Simplify right side
    34,283.40x = 916,842,902.29
  5. Step 5: Solve for x
    x = 916,842,902.29/34,283.40
  6. Step 6: Final answer
    x = 26,743.06

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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.