Home / 20,180,939.21-30,280,856.79-8,819,911.61

Finding the Fourth Proportional to 20,180,939.21, 30,280,856.79 and 8,819,911.61

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Solution

The fourth proportional to 20,180,939.21, 30,280,856.79 and 8,819,911.61 is: 13,233,996.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180,939.21 : 30,280,856.79 = 8,819,911.61 : x
  2. Step 2: Convert to fraction form
    20,180,939.21/30,280,856.79 = 8,819,911.61/x
  3. Step 3: Cross multiply
    20,180,939.21x = 30,280,856.79 × 8,819,911.61
  4. Step 4: Simplify right side
    20,180,939.21x = 267,074,480,362,868.31
  5. Step 5: Solve for x
    x = 267,074,480,362,868.31/20,180,939.21
  6. Step 6: Final answer
    x = 13,233,996.57

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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.