Home / 13,642,139.44-18,825,490.92-7,761,219.88

Finding the Fourth Proportional to 13,642,139.44, 18,825,490.92 and 7,761,219.88

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Solution

The fourth proportional to 13,642,139.44, 18,825,490.92 and 7,761,219.88 is: 10,710,107.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642,139.44 : 18,825,490.92 = 7,761,219.88 : x
  2. Step 2: Convert to fraction form
    13,642,139.44/18,825,490.92 = 7,761,219.88/x
  3. Step 3: Cross multiply
    13,642,139.44x = 18,825,490.92 × 7,761,219.88
  4. Step 4: Simplify right side
    13,642,139.44x = 146,108,774,379,063.50
  5. Step 5: Solve for x
    x = 146,108,774,379,063.50/13,642,139.44
  6. Step 6: Final answer
    x = 10,710,107.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.