Home / 21,305,137.73-31,962,442.67-9,939,386.21

Finding the Fourth Proportional to 21,305,137.73, 31,962,442.67 and 9,939,386.21

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Solution

The fourth proportional to 21,305,137.73, 31,962,442.67 and 9,939,386.21 is: 14,911,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,137.73 : 31,962,442.67 = 9,939,386.21 : x
  2. Step 2: Convert to fraction form
    21,305,137.73/31,962,442.67 = 9,939,386.21/x
  3. Step 3: Cross multiply
    21,305,137.73x = 31,962,442.67 × 9,939,386.21
  4. Step 4: Simplify right side
    21,305,137.73x = 317,687,061,912,113.62
  5. Step 5: Solve for x
    x = 317,687,061,912,113.62/21,305,137.73
  6. Step 6: Final answer
    x = 14,911,288.81

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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.