Home / 20,794,620.60-31,194,015.30-7,145,969.40

Finding the Fourth Proportional to 20,794,620.60, 31,194,015.30 and 7,145,969.40

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Solution

The fourth proportional to 20,794,620.60, 31,194,015.30 and 7,145,969.40 is: 10,719,670.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794,620.60 : 31,194,015.30 = 7,145,969.40 : x
  2. Step 2: Convert to fraction form
    20,794,620.60/31,194,015.30 = 7,145,969.40/x
  3. Step 3: Cross multiply
    20,794,620.60x = 31,194,015.30 × 7,145,969.40
  4. Step 4: Simplify right side
    20,794,620.60x = 222,911,478,796,931.84
  5. Step 5: Solve for x
    x = 222,911,478,796,931.84/20,794,620.60
  6. Step 6: Final answer
    x = 10,719,670.39

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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.