Home / 15,311,103.66-21,129,311.46-8,435,585.74

Finding the Fourth Proportional to 15,311,103.66, 21,129,311.46 and 8,435,585.74

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Solution

The fourth proportional to 15,311,103.66, 21,129,311.46 and 8,435,585.74 is: 11,641,101.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,103.66 : 21,129,311.46 = 8,435,585.74 : x
  2. Step 2: Convert to fraction form
    15,311,103.66/21,129,311.46 = 8,435,585.74/x
  3. Step 3: Cross multiply
    15,311,103.66x = 21,129,311.46 × 8,435,585.74
  4. Step 4: Simplify right side
    15,311,103.66x = 178,238,118,447,994.59
  5. Step 5: Solve for x
    x = 178,238,118,447,994.59/15,311,103.66
  6. Step 6: Final answer
    x = 11,641,101.94

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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.