Home / 15,311,100.67-21,129,307.31-8,435,582.73

Finding the Fourth Proportional to 15,311,100.67, 21,129,307.31 and 8,435,582.73

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Solution

The fourth proportional to 15,311,100.67, 21,129,307.31 and 8,435,582.73 is: 11,641,097.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,100.67 : 21,129,307.31 = 8,435,582.73 : x
  2. Step 2: Convert to fraction form
    15,311,100.67/21,129,307.31 = 8,435,582.73/x
  3. Step 3: Cross multiply
    15,311,100.67x = 21,129,307.31 × 8,435,582.73
  4. Step 4: Simplify right side
    15,311,100.67x = 178,238,019,862,187.72
  5. Step 5: Solve for x
    x = 178,238,019,862,187.72/15,311,100.67
  6. Step 6: Final answer
    x = 11,641,097.77

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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.