Home / 20,793,885.60-31,192,912.80-7,145,234.40

Finding the Fourth Proportional to 20,793,885.60, 31,192,912.80 and 7,145,234.40

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Solution

The fourth proportional to 20,793,885.60, 31,192,912.80 and 7,145,234.40 is: 10,718,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793,885.60 : 31,192,912.80 = 7,145,234.40 : x
  2. Step 2: Convert to fraction form
    20,793,885.60/31,192,912.80 = 7,145,234.40/x
  3. Step 3: Cross multiply
    20,793,885.60x = 31,192,912.80 × 7,145,234.40
  4. Step 4: Simplify right side
    20,793,885.60x = 222,880,673,574,760.34
  5. Step 5: Solve for x
    x = 222,880,673,574,760.34/20,793,885.60
  6. Step 6: Final answer
    x = 10,718,567.85

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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.