Home / 20,202,438.40-30,285,942.90-12,118,630.30

Finding the Fourth Proportional to 20,202,438.40, 30,285,942.90 and 12,118,630.30

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Solution

The fourth proportional to 20,202,438.40, 30,285,942.90 and 12,118,630.30 is: 18,167,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202,438.40 : 30,285,942.90 = 12,118,630.30 : x
  2. Step 2: Convert to fraction form
    20,202,438.40/30,285,942.90 = 12,118,630.30/x
  3. Step 3: Cross multiply
    20,202,438.40x = 30,285,942.90 × 12,118,630.30
  4. Step 4: Simplify right side
    20,202,438.40x = 367,024,145,292,009.88
  5. Step 5: Solve for x
    x = 367,024,145,292,009.88/20,202,438.40
  6. Step 6: Final answer
    x = 18,167,319.11

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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.