Home / 21,620,271.82-29,835,974.81-11,830,715.72

Finding the Fourth Proportional to 21,620,271.82, 29,835,974.81 and 11,830,715.72

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Solution

The fourth proportional to 21,620,271.82, 29,835,974.81 and 11,830,715.72 is: 16,326,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620,271.82 : 29,835,974.81 = 11,830,715.72 : x
  2. Step 2: Convert to fraction form
    21,620,271.82/29,835,974.81 = 11,830,715.72/x
  3. Step 3: Cross multiply
    21,620,271.82x = 29,835,974.81 × 11,830,715.72
  4. Step 4: Simplify right side
    21,620,271.82x = 352,980,936,187,867.56
  5. Step 5: Solve for x
    x = 352,980,936,187,867.56/21,620,271.82
  6. Step 6: Final answer
    x = 16,326,387.53

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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.