Home / 20,775,656.70-31,163,485.05-13,122,906.30

Finding the Fourth Proportional to 20,775,656.70, 31,163,485.05 and 13,122,906.30

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Solution

The fourth proportional to 20,775,656.70, 31,163,485.05 and 13,122,906.30 is: 19,684,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,656.70 : 31,163,485.05 = 13,122,906.30 : x
  2. Step 2: Convert to fraction form
    20,775,656.70/31,163,485.05 = 13,122,906.30/x
  3. Step 3: Cross multiply
    20,775,656.70x = 31,163,485.05 × 13,122,906.30
  4. Step 4: Simplify right side
    20,775,656.70x = 408,955,494,292,600.88
  5. Step 5: Solve for x
    x = 408,955,494,292,600.88/20,775,656.70
  6. Step 6: Final answer
    x = 19,684,359.45

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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.