Home / 21,430,458,881.53-29,575,689,837.82-12,857,208,161.34

Finding the Fourth Proportional to 21,430,458,881.53, 29,575,689,837.82 and 12,857,208,161.34

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Solution

The fourth proportional to 21,430,458,881.53, 29,575,689,837.82 and 12,857,208,161.34 is: 17,743,941,128.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430,458,881.53 : 29,575,689,837.82 = 12,857,208,161.34 : x
  2. Step 2: Convert to fraction form
    21,430,458,881.53/29,575,689,837.82 = 12,857,208,161.34/x
  3. Step 3: Cross multiply
    21,430,458,881.53x = 29,575,689,837.82 × 12,857,208,161.34
  4. Step 4: Simplify right side
    21,430,458,881.53x = 380,260,800,760,079,777,792
  5. Step 5: Solve for x
    x = 380,260,800,760,079,777,792/21,430,458,881.53
  6. Step 6: Final answer
    x = 17,743,941,128.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.