Home / 21,029,100.80-31,543,651.20-9,691,692.80

Finding the Fourth Proportional to 21,029,100.80, 31,543,651.20 and 9,691,692.80

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Solution

The fourth proportional to 21,029,100.80, 31,543,651.20 and 9,691,692.80 is: 14,537,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029,100.80 : 31,543,651.20 = 9,691,692.80 : x
  2. Step 2: Convert to fraction form
    21,029,100.80/31,543,651.20 = 9,691,692.80/x
  3. Step 3: Cross multiply
    21,029,100.80x = 31,543,651.20 × 9,691,692.80
  4. Step 4: Simplify right side
    21,029,100.80x = 305,711,377,220,751.38
  5. Step 5: Solve for x
    x = 305,711,377,220,751.38/21,029,100.80
  6. Step 6: Final answer
    x = 14,537,539.20

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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.