Home / 20,779,555.81-28,675,825.89-11,612,198.56

Finding the Fourth Proportional to 20,779,555.81, 28,675,825.89 and 11,612,198.56

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Solution

The fourth proportional to 20,779,555.81, 28,675,825.89 and 11,612,198.56 is: 16,024,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779,555.81 : 28,675,825.89 = 11,612,198.56 : x
  2. Step 2: Convert to fraction form
    20,779,555.81/28,675,825.89 = 11,612,198.56/x
  3. Step 3: Cross multiply
    20,779,555.81x = 28,675,825.89 × 11,612,198.56
  4. Step 4: Simplify right side
    20,779,555.81x = 332,989,384,106,668.75
  5. Step 5: Solve for x
    x = 332,989,384,106,668.75/20,779,555.81
  6. Step 6: Final answer
    x = 16,024,855.74

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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.