Home / 21,021,404,778.45-31,532,188,974.23-5,085,715,678.16

Finding the Fourth Proportional to 21,021,404,778.45, 31,532,188,974.23 and 5,085,715,678.16

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Solution

The fourth proportional to 21,021,404,778.45, 31,532,188,974.23 and 5,085,715,678.16 is: 7,628,593,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,404,778.45 : 31,532,188,974.23 = 5,085,715,678.16 : x
  2. Step 2: Convert to fraction form
    21,021,404,778.45/31,532,188,974.23 = 5,085,715,678.16/x
  3. Step 3: Cross multiply
    21,021,404,778.45x = 31,532,188,974.23 × 5,085,715,678.16
  4. Step 4: Simplify right side
    21,021,404,778.45x = 160,363,747,832,919,949,312
  5. Step 5: Solve for x
    x = 160,363,747,832,919,949,312/21,021,404,778.45
  6. Step 6: Final answer
    x = 7,628,593,308.73

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1.5x scale

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.