Home / 20,765,183.80-31,133,030.10-7,980,748.60

Finding the Fourth Proportional to 20,765,183.80, 31,133,030.10 and 7,980,748.60

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Solution

The fourth proportional to 20,765,183.80, 31,133,030.10 and 7,980,748.60 is: 11,965,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765,183.80 : 31,133,030.10 = 7,980,748.60 : x
  2. Step 2: Convert to fraction form
    20,765,183.80/31,133,030.10 = 7,980,748.60/x
  3. Step 3: Cross multiply
    20,765,183.80x = 31,133,030.10 × 7,980,748.60
  4. Step 4: Simplify right side
    20,765,183.80x = 248,464,886,384,332.88
  5. Step 5: Solve for x
    x = 248,464,886,384,332.88/20,765,183.80
  6. Step 6: Final answer
    x = 11,965,455.68

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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.