Home / 39,475.89-54,476.82-21,571.20

Finding the Fourth Proportional to 39,475.89, 54,476.82 and 21,571.20

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Solution

The fourth proportional to 39,475.89, 54,476.82 and 21,571.20 is: 29,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,475.89 : 54,476.82 = 21,571.20 : x
  2. Step 2: Convert to fraction form
    39,475.89/54,476.82 = 21,571.20/x
  3. Step 3: Cross multiply
    39,475.89x = 54,476.82 × 21,571.20
  4. Step 4: Simplify right side
    39,475.89x = 1,175,130,379.58
  5. Step 5: Solve for x
    x = 1,175,130,379.58/39,475.89
  6. Step 6: Final answer
    x = 29,768.31

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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.