Home / 20,794,621.60-31,194,016.80-7,145,970.40

Finding the Fourth Proportional to 20,794,621.60, 31,194,016.80 and 7,145,970.40

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Solution

The fourth proportional to 20,794,621.60, 31,194,016.80 and 7,145,970.40 is: 10,719,671.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794,621.60 : 31,194,016.80 = 7,145,970.40 : x
  2. Step 2: Convert to fraction form
    20,794,621.60/31,194,016.80 = 7,145,970.40/x
  3. Step 3: Cross multiply
    20,794,621.60x = 31,194,016.80 × 7,145,970.40
  4. Step 4: Simplify right side
    20,794,621.60x = 222,911,520,709,902.75
  5. Step 5: Solve for x
    x = 222,911,520,709,902.75/20,794,621.60
  6. Step 6: Final answer
    x = 10,719,671.89

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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.