Home / 20,855,010.87-28,779,950.43-11,687,653.62

Finding the Fourth Proportional to 20,855,010.87, 28,779,950.43 and 11,687,653.62

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Solution

The fourth proportional to 20,855,010.87, 28,779,950.43 and 11,687,653.62 is: 16,128,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855,010.87 : 28,779,950.43 = 11,687,653.62 : x
  2. Step 2: Convert to fraction form
    20,855,010.87/28,779,950.43 = 11,687,653.62/x
  3. Step 3: Cross multiply
    20,855,010.87x = 28,779,950.43 × 11,687,653.62
  4. Step 4: Simplify right side
    20,855,010.87x = 336,370,091,826,610
  5. Step 5: Solve for x
    x = 336,370,091,826,610/20,855,010.87
  6. Step 6: Final answer
    x = 16,128,981.85

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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.