Home / 20,775,999.90-31,163,999.85-12,260,415.90

Finding the Fourth Proportional to 20,775,999.90, 31,163,999.85 and 12,260,415.90

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Solution

The fourth proportional to 20,775,999.90, 31,163,999.85 and 12,260,415.90 is: 18,390,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,999.90 : 31,163,999.85 = 12,260,415.90 : x
  2. Step 2: Convert to fraction form
    20,775,999.90/31,163,999.85 = 12,260,415.90/x
  3. Step 3: Cross multiply
    20,775,999.90x = 31,163,999.85 × 12,260,415.90
  4. Step 4: Simplify right side
    20,775,999.90x = 382,083,599,268,537.62
  5. Step 5: Solve for x
    x = 382,083,599,268,537.62/20,775,999.90
  6. Step 6: Final answer
    x = 18,390,623.85

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1.5x scale

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.