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Finding the Fourth Proportional to 28,891.94, 43,263.94 and 19,994.96

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Solution

The fourth proportional to 28,891.94, 43,263.94 and 19,994.96 is: 29,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.94 : 43,263.94 = 19,994.96 : x
  2. Step 2: Convert to fraction form
    28,891.94/43,263.94 = 19,994.96/x
  3. Step 3: Cross multiply
    28,891.94x = 43,263.94 × 19,994.96
  4. Step 4: Simplify right side
    28,891.94x = 865,060,749.74
  5. Step 5: Solve for x
    x = 865,060,749.74/28,891.94
  6. Step 6: Final answer
    x = 29,941.25

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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.