Home / 20,867,795.20-31,301,692.80-8,735,161.60

Finding the Fourth Proportional to 20,867,795.20, 31,301,692.80 and 8,735,161.60

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Solution

The fourth proportional to 20,867,795.20, 31,301,692.80 and 8,735,161.60 is: 13,102,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867,795.20 : 31,301,692.80 = 8,735,161.60 : x
  2. Step 2: Convert to fraction form
    20,867,795.20/31,301,692.80 = 8,735,161.60/x
  3. Step 3: Cross multiply
    20,867,795.20x = 31,301,692.80 × 8,735,161.60
  4. Step 4: Simplify right side
    20,867,795.20x = 273,425,344,961,556.47
  5. Step 5: Solve for x
    x = 273,425,344,961,556.47/20,867,795.20
  6. Step 6: Final answer
    x = 13,102,742.40

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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.