Home / 20,218,303.88-27,898,141.56-11,515,367.01

Finding the Fourth Proportional to 20,218,303.88, 27,898,141.56 and 11,515,367.01

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Solution

The fourth proportional to 20,218,303.88, 27,898,141.56 and 11,515,367.01 is: 15,889,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,303.88 : 27,898,141.56 = 11,515,367.01 : x
  2. Step 2: Convert to fraction form
    20,218,303.88/27,898,141.56 = 11,515,367.01/x
  3. Step 3: Cross multiply
    20,218,303.88x = 27,898,141.56 × 11,515,367.01
  4. Step 4: Simplify right side
    20,218,303.88x = 321,257,338,960,333.94
  5. Step 5: Solve for x
    x = 321,257,338,960,333.94/20,218,303.88
  6. Step 6: Final answer
    x = 15,889,430.73

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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.