Home / 20,684,391.64-31,028,706.30-7,915,635.88

Finding the Fourth Proportional to 20,684,391.64, 31,028,706.30 and 7,915,635.88

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Solution

The fourth proportional to 20,684,391.64, 31,028,706.30 and 7,915,635.88 is: 11,874,264.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,391.64 : 31,028,706.30 = 7,915,635.88 : x
  2. Step 2: Convert to fraction form
    20,684,391.64/31,028,706.30 = 7,915,635.88/x
  3. Step 3: Cross multiply
    20,684,391.64x = 31,028,706.30 × 7,915,635.88
  4. Step 4: Simplify right side
    20,684,391.64x = 245,611,940,898,262.03
  5. Step 5: Solve for x
    x = 245,611,940,898,262.03/20,684,391.64
  6. Step 6: Final answer
    x = 11,874,264.67

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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.