Home / 39,784.06-54,900.74-21,879.01

Finding the Fourth Proportional to 39,784.06, 54,900.74 and 21,879.01

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Solution

The fourth proportional to 39,784.06, 54,900.74 and 21,879.01 is: 30,192.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.06 : 54,900.74 = 21,879.01 : x
  2. Step 2: Convert to fraction form
    39,784.06/54,900.74 = 21,879.01/x
  3. Step 3: Cross multiply
    39,784.06x = 54,900.74 × 21,879.01
  4. Step 4: Simplify right side
    39,784.06x = 1,201,173,756.91
  5. Step 5: Solve for x
    x = 1,201,173,756.91/39,784.06
  6. Step 6: Final answer
    x = 30,192.34

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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.