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Finding the Fourth Proportional to 21,869.85, 32,797.94 and 7,075.70

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Solution

The fourth proportional to 21,869.85, 32,797.94 and 7,075.70 is: 10,611.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.85 : 32,797.94 = 7,075.70 : x
  2. Step 2: Convert to fraction form
    21,869.85/32,797.94 = 7,075.70/x
  3. Step 3: Cross multiply
    21,869.85x = 32,797.94 × 7,075.70
  4. Step 4: Simplify right side
    21,869.85x = 232,068,512.07
  5. Step 5: Solve for x
    x = 232,068,512.07/21,869.85
  6. Step 6: Final answer
    x = 10,611.35

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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.