Home / 13,972,570.40-20,916,865.20-8,289,869.60

Finding the Fourth Proportional to 13,972,570.40, 20,916,865.20 and 8,289,869.60

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Solution

The fourth proportional to 13,972,570.40, 20,916,865.20 and 8,289,869.60 is: 12,409,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972,570.40 : 20,916,865.20 = 8,289,869.60 : x
  2. Step 2: Convert to fraction form
    13,972,570.40/20,916,865.20 = 8,289,869.60/x
  3. Step 3: Cross multiply
    13,972,570.40x = 20,916,865.20 × 8,289,869.60
  4. Step 4: Simplify right side
    13,972,570.40x = 173,398,084,948,777.91
  5. Step 5: Solve for x
    x = 173,398,084,948,777.91/13,972,570.40
  6. Step 6: Final answer
    x = 12,409,891.67

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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.