Home / 21,138,766.98-31,700,372.88-7,302,205.68

Finding the Fourth Proportional to 21,138,766.98, 31,700,372.88 and 7,302,205.68

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Solution

The fourth proportional to 21,138,766.98, 31,700,372.88 and 7,302,205.68 is: 10,950,621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,766.98 : 31,700,372.88 = 7,302,205.68 : x
  2. Step 2: Convert to fraction form
    21,138,766.98/31,700,372.88 = 7,302,205.68/x
  3. Step 3: Cross multiply
    21,138,766.98x = 31,700,372.88 × 7,302,205.68
  4. Step 4: Simplify right side
    21,138,766.98x = 231,482,642,902,453.94
  5. Step 5: Solve for x
    x = 231,482,642,902,453.94/21,138,766.98
  6. Step 6: Final answer
    x = 10,950,621.82

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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.