Home / 21,008,759.88-28,992,030.30-11,716,338.64

Finding the Fourth Proportional to 21,008,759.88, 28,992,030.30 and 11,716,338.64

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Solution

The fourth proportional to 21,008,759.88, 28,992,030.30 and 11,716,338.64 is: 16,168,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,759.88 : 28,992,030.30 = 11,716,338.64 : x
  2. Step 2: Convert to fraction form
    21,008,759.88/28,992,030.30 = 11,716,338.64/x
  3. Step 3: Cross multiply
    21,008,759.88x = 28,992,030.30 × 11,716,338.64
  4. Step 4: Simplify right side
    21,008,759.88x = 339,680,444,855,940.81
  5. Step 5: Solve for x
    x = 339,680,444,855,940.81/21,008,759.88
  6. Step 6: Final answer
    x = 16,168,514.79

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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.