Home / 20,922,163.20-31,383,244.80-7,459,430.40

Finding the Fourth Proportional to 20,922,163.20, 31,383,244.80 and 7,459,430.40

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Solution

The fourth proportional to 20,922,163.20, 31,383,244.80 and 7,459,430.40 is: 11,189,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922,163.20 : 31,383,244.80 = 7,459,430.40 : x
  2. Step 2: Convert to fraction form
    20,922,163.20/31,383,244.80 = 7,459,430.40/x
  3. Step 3: Cross multiply
    20,922,163.20x = 31,383,244.80 × 7,459,430.40
  4. Step 4: Simplify right side
    20,922,163.20x = 234,101,130,311,761.94
  5. Step 5: Solve for x
    x = 234,101,130,311,761.94/20,922,163.20
  6. Step 6: Final answer
    x = 11,189,145.60

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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.