Home / 39,710.35-54,801.21-21,804.31

Finding the Fourth Proportional to 39,710.35, 54,801.21 and 21,804.31

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Solution

The fourth proportional to 39,710.35, 54,801.21 and 21,804.31 is: 30,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,710.35 : 54,801.21 = 21,804.31 : x
  2. Step 2: Convert to fraction form
    39,710.35/54,801.21 = 21,804.31/x
  3. Step 3: Cross multiply
    39,710.35x = 54,801.21 × 21,804.31
  4. Step 4: Simplify right side
    39,710.35x = 1,194,902,571.22
  5. Step 5: Solve for x
    x = 1,194,902,571.22/39,710.35
  6. Step 6: Final answer
    x = 30,090.46

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1.5x scale

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.