Home / 20,556,898,716.06-28,377,815,589.72-12,947,128,274.79

Finding the Fourth Proportional to 20,556,898,716.06, 28,377,815,589.72 and 12,947,128,274.79

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Solution

The fourth proportional to 20,556,898,716.06, 28,377,815,589.72 and 12,947,128,274.79 is: 17,872,891,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556,898,716.06 : 28,377,815,589.72 = 12,947,128,274.79 : x
  2. Step 2: Convert to fraction form
    20,556,898,716.06/28,377,815,589.72 = 12,947,128,274.79/x
  3. Step 3: Cross multiply
    20,556,898,716.06x = 28,377,815,589.72 × 12,947,128,274.79
  4. Step 4: Simplify right side
    20,556,898,716.06x = 367,411,218,598,440,337,408
  5. Step 5: Solve for x
    x = 367,411,218,598,440,337,408/20,556,898,716.06
  6. Step 6: Final answer
    x = 17,872,891,415.83

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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.