Home / 18,947,108.75-28,409,784.08-7,419,078.66

Finding the Fourth Proportional to 18,947,108.75, 28,409,784.08 and 7,419,078.66

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Solution

The fourth proportional to 18,947,108.75, 28,409,784.08 and 7,419,078.66 is: 11,124,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,108.75 : 28,409,784.08 = 7,419,078.66 : x
  2. Step 2: Convert to fraction form
    18,947,108.75/28,409,784.08 = 7,419,078.66/x
  3. Step 3: Cross multiply
    18,947,108.75x = 28,409,784.08 × 7,419,078.66
  4. Step 4: Simplify right side
    18,947,108.75x = 210,774,422,766,040.34
  5. Step 5: Solve for x
    x = 210,774,422,766,040.34/18,947,108.75
  6. Step 6: Final answer
    x = 11,124,358.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.