Home / 21,412,209,930.44-29,549,647,162.68-12,840,032,202.72

Finding the Fourth Proportional to 21,412,209,930.44, 29,549,647,162.68 and 12,840,032,202.72

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Solution

The fourth proportional to 21,412,209,930.44, 29,549,647,162.68 and 12,840,032,202.72 is: 17,719,722,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,412,209,930.44 : 29,549,647,162.68 = 12,840,032,202.72 : x
  2. Step 2: Convert to fraction form
    21,412,209,930.44/29,549,647,162.68 = 12,840,032,202.72/x
  3. Step 3: Cross multiply
    21,412,209,930.44x = 29,549,647,162.68 × 12,840,032,202.72
  4. Step 4: Simplify right side
    21,412,209,930.44x = 379,418,421,147,824,881,664
  5. Step 5: Solve for x
    x = 379,418,421,147,824,881,664/21,412,209,930.44
  6. Step 6: Final answer
    x = 17,719,722,643.31

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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.