Home / 20,983,525.50-31,440,491.34-12,761,297.72

Finding the Fourth Proportional to 20,983,525.50, 31,440,491.34 and 12,761,297.72

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Solution

The fourth proportional to 20,983,525.50, 31,440,491.34 and 12,761,297.72 is: 19,120,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983,525.50 : 31,440,491.34 = 12,761,297.72 : x
  2. Step 2: Convert to fraction form
    20,983,525.50/31,440,491.34 = 12,761,297.72/x
  3. Step 3: Cross multiply
    20,983,525.50x = 31,440,491.34 × 12,761,297.72
  4. Step 4: Simplify right side
    20,983,525.50x = 401,221,470,295,619.31
  5. Step 5: Solve for x
    x = 401,221,470,295,619.31/20,983,525.50
  6. Step 6: Final answer
    x = 19,120,784.56

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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.