Home / 18,972,313.56-28,459,257.72-5,509,141.56

Finding the Fourth Proportional to 18,972,313.56, 28,459,257.72 and 5,509,141.56

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Solution

The fourth proportional to 18,972,313.56, 28,459,257.72 and 5,509,141.56 is: 8,263,940.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972,313.56 : 28,459,257.72 = 5,509,141.56 : x
  2. Step 2: Convert to fraction form
    18,972,313.56/28,459,257.72 = 5,509,141.56/x
  3. Step 3: Cross multiply
    18,972,313.56x = 28,459,257.72 × 5,509,141.56
  4. Step 4: Simplify right side
    18,972,313.56x = 156,786,079,472,002.81
  5. Step 5: Solve for x
    x = 156,786,079,472,002.81/18,972,313.56
  6. Step 6: Final answer
    x = 8,263,940.98

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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.