Home / 20,763,486.40-31,145,229.60-12,260,430.40

Finding the Fourth Proportional to 20,763,486.40, 31,145,229.60 and 12,260,430.40

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Solution

The fourth proportional to 20,763,486.40, 31,145,229.60 and 12,260,430.40 is: 18,390,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763,486.40 : 31,145,229.60 = 12,260,430.40 : x
  2. Step 2: Convert to fraction form
    20,763,486.40/31,145,229.60 = 12,260,430.40/x
  3. Step 3: Cross multiply
    20,763,486.40x = 31,145,229.60 × 12,260,430.40
  4. Step 4: Simplify right side
    20,763,486.40x = 381,853,919,802,819.88
  5. Step 5: Solve for x
    x = 381,853,919,802,819.88/20,763,486.40
  6. Step 6: Final answer
    x = 18,390,645.60

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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.