Home / 20,693,429.89-31,039,113.03-7,738,628.15

Finding the Fourth Proportional to 20,693,429.89, 31,039,113.03 and 7,738,628.15

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Solution

The fourth proportional to 20,693,429.89, 31,039,113.03 and 7,738,628.15 is: 11,607,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693,429.89 : 31,039,113.03 = 7,738,628.15 : x
  2. Step 2: Convert to fraction form
    20,693,429.89/31,039,113.03 = 7,738,628.15/x
  3. Step 3: Cross multiply
    20,693,429.89x = 31,039,113.03 × 7,738,628.15
  4. Step 4: Simplify right side
    20,693,429.89x = 240,200,153,844,989.81
  5. Step 5: Solve for x
    x = 240,200,153,844,989.81/20,693,429.89
  6. Step 6: Final answer
    x = 11,607,556.37

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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.