Home / 28,115,921,159.88-38,800,563,820.74-15,428,545,853.64

Finding the Fourth Proportional to 28,115,921,159.88, 38,800,563,820.74 and 15,428,545,853.64

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Solution

The fourth proportional to 28,115,921,159.88, 38,800,563,820.74 and 15,428,545,853.64 is: 21,291,718,476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115,921,159.88 : 38,800,563,820.74 = 15,428,545,853.64 : x
  2. Step 2: Convert to fraction form
    28,115,921,159.88/38,800,563,820.74 = 15,428,545,853.64/x
  3. Step 3: Cross multiply
    28,115,921,159.88x = 38,800,563,820.74 × 15,428,545,853.64
  4. Step 4: Simplify right side
    28,115,921,159.88x = 598,636,278,055,372,324,864
  5. Step 5: Solve for x
    x = 598,636,278,055,372,324,864/28,115,921,159.88
  6. Step 6: Final answer
    x = 21,291,718,476.92

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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.