Home / 20,742,469.40-31,113,704.10-9,980,789.15

Finding the Fourth Proportional to 20,742,469.40, 31,113,704.10 and 9,980,789.15

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Solution

The fourth proportional to 20,742,469.40, 31,113,704.10 and 9,980,789.15 is: 14,971,183.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,469.40 : 31,113,704.10 = 9,980,789.15 : x
  2. Step 2: Convert to fraction form
    20,742,469.40/31,113,704.10 = 9,980,789.15/x
  3. Step 3: Cross multiply
    20,742,469.40x = 31,113,704.10 × 9,980,789.15
  4. Step 4: Simplify right side
    20,742,469.40x = 310,539,320,297,590.56
  5. Step 5: Solve for x
    x = 310,539,320,297,590.56/20,742,469.40
  6. Step 6: Final answer
    x = 14,971,183.73

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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.