Home / 21,328,365,860.27-29,421,985,985.01-13,187,566,977.67

Finding the Fourth Proportional to 21,328,365,860.27, 29,421,985,985.01 and 13,187,566,977.67

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Solution

The fourth proportional to 21,328,365,860.27, 29,421,985,985.01 and 13,187,566,977.67 is: 18,191,942,755.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328,365,860.27 : 29,421,985,985.01 = 13,187,566,977.67 : x
  2. Step 2: Convert to fraction form
    21,328,365,860.27/29,421,985,985.01 = 13,187,566,977.67/x
  3. Step 3: Cross multiply
    21,328,365,860.27x = 29,421,985,985.01 × 13,187,566,977.67
  4. Step 4: Simplify right side
    21,328,365,860.27x = 388,004,410,793,240,297,472
  5. Step 5: Solve for x
    x = 388,004,410,793,240,297,472/21,328,365,860.27
  6. Step 6: Final answer
    x = 18,191,942,755.26

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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.