Home / 20,431,939,578.27-30,633,200,406.39-12,555,077,851.37

Finding the Fourth Proportional to 20,431,939,578.27, 30,633,200,406.39 and 12,555,077,851.37

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Solution

The fourth proportional to 20,431,939,578.27, 30,633,200,406.39 and 12,555,077,851.37 is: 18,823,578,371.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431,939,578.27 : 30,633,200,406.39 = 12,555,077,851.37 : x
  2. Step 2: Convert to fraction form
    20,431,939,578.27/30,633,200,406.39 = 12,555,077,851.37/x
  3. Step 3: Cross multiply
    20,431,939,578.27x = 30,633,200,406.39 × 12,555,077,851.37
  4. Step 4: Simplify right side
    20,431,939,578.27x = 384,602,215,938,692,415,488
  5. Step 5: Solve for x
    x = 384,602,215,938,692,415,488/20,431,939,578.27
  6. Step 6: Final answer
    x = 18,823,578,371.76

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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.