Home / 21,124,368,064.80-31,706,959,431.60-12,859,397,632.80

Finding the Fourth Proportional to 21,124,368,064.80, 31,706,959,431.60 and 12,859,397,632.80

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Solution

The fourth proportional to 21,124,368,064.80, 31,706,959,431.60 and 12,859,397,632.80 is: 19,301,519,354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,368,064.80 : 31,706,959,431.60 = 12,859,397,632.80 : x
  2. Step 2: Convert to fraction form
    21,124,368,064.80/31,706,959,431.60 = 12,859,397,632.80/x
  3. Step 3: Cross multiply
    21,124,368,064.80x = 31,706,959,431.60 × 12,859,397,632.80
  4. Step 4: Simplify right side
    21,124,368,064.80x = 407,732,399,058,002,640,896
  5. Step 5: Solve for x
    x = 407,732,399,058,002,640,896/21,124,368,064.80
  6. Step 6: Final answer
    x = 19,301,519,354.67

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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.