Home / 20,920,987.33-31,289,697.42-18,631,623.58

Finding the Fourth Proportional to 20,920,987.33, 31,289,697.42 and 18,631,623.58

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Solution

The fourth proportional to 20,920,987.33, 31,289,697.42 and 18,631,623.58 is: 27,865,695.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920,987.33 : 31,289,697.42 = 18,631,623.58 : x
  2. Step 2: Convert to fraction form
    20,920,987.33/31,289,697.42 = 18,631,623.58/x
  3. Step 3: Cross multiply
    20,920,987.33x = 31,289,697.42 × 18,631,623.58
  4. Step 4: Simplify right side
    20,920,987.33x = 582,977,864,261,537.12
  5. Step 5: Solve for x
    x = 582,977,864,261,537.12/20,920,987.33
  6. Step 6: Final answer
    x = 27,865,695.58

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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.