Home / 20,861,738,406.20-31,292,607,609.30-12,576,360,639.80

Finding the Fourth Proportional to 20,861,738,406.20, 31,292,607,609.30 and 12,576,360,639.80

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Solution

The fourth proportional to 20,861,738,406.20, 31,292,607,609.30 and 12,576,360,639.80 is: 18,864,540,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861,738,406.20 : 31,292,607,609.30 = 12,576,360,639.80 : x
  2. Step 2: Convert to fraction form
    20,861,738,406.20/31,292,607,609.30 = 12,576,360,639.80/x
  3. Step 3: Cross multiply
    20,861,738,406.20x = 31,292,607,609.30 × 12,576,360,639.80
  4. Step 4: Simplify right side
    20,861,738,406.20x = 393,547,118,654,306,451,456
  5. Step 5: Solve for x
    x = 393,547,118,654,306,451,456/20,861,738,406.20
  6. Step 6: Final answer
    x = 18,864,540,959.70

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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.