Home / 20,819,415.20-31,230,347.54-8,039,986.88

Finding the Fourth Proportional to 20,819,415.20, 31,230,347.54 and 8,039,986.88

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Solution

The fourth proportional to 20,819,415.20, 31,230,347.54 and 8,039,986.88 is: 12,060,453.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819,415.20 : 31,230,347.54 = 8,039,986.88 : x
  2. Step 2: Convert to fraction form
    20,819,415.20/31,230,347.54 = 8,039,986.88/x
  3. Step 3: Cross multiply
    20,819,415.20x = 31,230,347.54 × 8,039,986.88
  4. Step 4: Simplify right side
    20,819,415.20x = 251,091,584,479,440.25
  5. Step 5: Solve for x
    x = 251,091,584,479,440.25/20,819,415.20
  6. Step 6: Final answer
    x = 12,060,453.29

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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.