Home / 15,311,103.67-21,129,311.45-8,435,585.73

Finding the Fourth Proportional to 15,311,103.67, 21,129,311.45 and 8,435,585.73

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Solution

The fourth proportional to 15,311,103.67, 21,129,311.45 and 8,435,585.73 is: 11,641,101.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,103.67 : 21,129,311.45 = 8,435,585.73 : x
  2. Step 2: Convert to fraction form
    15,311,103.67/21,129,311.45 = 8,435,585.73/x
  3. Step 3: Cross multiply
    15,311,103.67x = 21,129,311.45 × 8,435,585.73
  4. Step 4: Simplify right side
    15,311,103.67x = 178,238,118,173,434.59
  5. Step 5: Solve for x
    x = 178,238,118,173,434.59/15,311,103.67
  6. Step 6: Final answer
    x = 11,641,101.91

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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.