Home / 21,190,401.09-31,782,501.43-10,108,970.51

Finding the Fourth Proportional to 21,190,401.09, 31,782,501.43 and 10,108,970.51

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Solution

The fourth proportional to 21,190,401.09, 31,782,501.43 and 10,108,970.51 is: 15,161,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,401.09 : 31,782,501.43 = 10,108,970.51 : x
  2. Step 2: Convert to fraction form
    21,190,401.09/31,782,501.43 = 10,108,970.51/x
  3. Step 3: Cross multiply
    21,190,401.09x = 31,782,501.43 × 10,108,970.51
  4. Step 4: Simplify right side
    21,190,401.09x = 321,288,369,505,717.88
  5. Step 5: Solve for x
    x = 321,288,369,505,717.88/21,190,401.09
  6. Step 6: Final answer
    x = 15,161,976.79

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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.