Home / 20,302,889.72-27,986,991.97-12,447,859.60

Finding the Fourth Proportional to 20,302,889.72, 27,986,991.97 and 12,447,859.60

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Solution

The fourth proportional to 20,302,889.72, 27,986,991.97 and 12,447,859.60 is: 17,159,042.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302,889.72 : 27,986,991.97 = 12,447,859.60 : x
  2. Step 2: Convert to fraction form
    20,302,889.72/27,986,991.97 = 12,447,859.60/x
  3. Step 3: Cross multiply
    20,302,889.72x = 27,986,991.97 × 12,447,859.60
  4. Step 4: Simplify right side
    20,302,889.72x = 348,378,146,668,887.38
  5. Step 5: Solve for x
    x = 348,378,146,668,887.38/20,302,889.72
  6. Step 6: Final answer
    x = 17,159,042.46

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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.