Home / 20,208,857.68-30,315,809.03-7,911,232.62

Finding the Fourth Proportional to 20,208,857.68, 30,315,809.03 and 7,911,232.62

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Solution

The fourth proportional to 20,208,857.68, 30,315,809.03 and 7,911,232.62 is: 11,867,836.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208,857.68 : 30,315,809.03 = 7,911,232.62 : x
  2. Step 2: Convert to fraction form
    20,208,857.68/30,315,809.03 = 7,911,232.62/x
  3. Step 3: Cross multiply
    20,208,857.68x = 30,315,809.03 × 7,911,232.62
  4. Step 4: Simplify right side
    20,208,857.68x = 239,835,417,299,826.56
  5. Step 5: Solve for x
    x = 239,835,417,299,826.56/20,208,857.68
  6. Step 6: Final answer
    x = 11,867,836.43

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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.