Home / 39,707.85-54,797.70-21,804.02

Finding the Fourth Proportional to 39,707.85, 54,797.70 and 21,804.02

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Solution

The fourth proportional to 39,707.85, 54,797.70 and 21,804.02 is: 30,090.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707.85 : 54,797.70 = 21,804.02 : x
  2. Step 2: Convert to fraction form
    39,707.85/54,797.70 = 21,804.02/x
  3. Step 3: Cross multiply
    39,707.85x = 54,797.70 × 21,804.02
  4. Step 4: Simplify right side
    39,707.85x = 1,194,809,872.77
  5. Step 5: Solve for x
    x = 1,194,809,872.77/39,707.85
  6. Step 6: Final answer
    x = 30,090.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.