Home / 39,807.35-54,933-21,902.36

Finding the Fourth Proportional to 39,807.35, 54,933 and 21,902.36

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Solution

The fourth proportional to 39,807.35, 54,933 and 21,902.36 is: 30,224.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.35 : 54,933 = 21,902.36 : x
  2. Step 2: Convert to fraction form
    39,807.35/54,933 = 21,902.36/x
  3. Step 3: Cross multiply
    39,807.35x = 54,933 × 21,902.36
  4. Step 4: Simplify right side
    39,807.35x = 1,203,162,341.88
  5. Step 5: Solve for x
    x = 1,203,162,341.88/39,807.35
  6. Step 6: Final answer
    x = 30,224.63

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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.