Home / 20,804.45-31,206.59-5,222.07

Finding the Fourth Proportional to 20,804.45, 31,206.59 and 5,222.07

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Solution

The fourth proportional to 20,804.45, 31,206.59 and 5,222.07 is: 7,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.45 : 31,206.59 = 5,222.07 : x
  2. Step 2: Convert to fraction form
    20,804.45/31,206.59 = 5,222.07/x
  3. Step 3: Cross multiply
    20,804.45x = 31,206.59 × 5,222.07
  4. Step 4: Simplify right side
    20,804.45x = 162,962,971.33
  5. Step 5: Solve for x
    x = 162,962,971.33/20,804.45
  6. Step 6: Final answer
    x = 7,833.08

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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.