Home / 21,021,404,778.95-31,532,188,974.98-5,085,715,678.66

Finding the Fourth Proportional to 21,021,404,778.95, 31,532,188,974.98 and 5,085,715,678.66

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Solution

The fourth proportional to 21,021,404,778.95, 31,532,188,974.98 and 5,085,715,678.66 is: 7,628,593,309.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,404,778.95 : 31,532,188,974.98 = 5,085,715,678.66 : x
  2. Step 2: Convert to fraction form
    21,021,404,778.95/31,532,188,974.98 = 5,085,715,678.66/x
  3. Step 3: Cross multiply
    21,021,404,778.95x = 31,532,188,974.98 × 5,085,715,678.66
  4. Step 4: Simplify right side
    21,021,404,778.95x = 160,363,747,852,525,764,608
  5. Step 5: Solve for x
    x = 160,363,747,852,525,764,608/21,021,404,778.95
  6. Step 6: Final answer
    x = 7,628,593,309.48

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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.