Home / 39,768.98-54,882.16-21,864.33

Finding the Fourth Proportional to 39,768.98, 54,882.16 and 21,864.33

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Solution

The fourth proportional to 39,768.98, 54,882.16 and 21,864.33 is: 30,173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,768.98 : 54,882.16 = 21,864.33 : x
  2. Step 2: Convert to fraction form
    39,768.98/54,882.16 = 21,864.33/x
  3. Step 3: Cross multiply
    39,768.98x = 54,882.16 × 21,864.33
  4. Step 4: Simplify right side
    39,768.98x = 1,199,961,602.69
  5. Step 5: Solve for x
    x = 1,199,961,602.69/39,768.98
  6. Step 6: Final answer
    x = 30,173.31

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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.