Home / 39,784.34-54,901.67-21,879.39

Finding the Fourth Proportional to 39,784.34, 54,901.67 and 21,879.39

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Solution

The fourth proportional to 39,784.34, 54,901.67 and 21,879.39 is: 30,193.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.34 : 54,901.67 = 21,879.39 : x
  2. Step 2: Convert to fraction form
    39,784.34/54,901.67 = 21,879.39/x
  3. Step 3: Cross multiply
    39,784.34x = 54,901.67 × 21,879.39
  4. Step 4: Simplify right side
    39,784.34x = 1,201,214,940.18
  5. Step 5: Solve for x
    x = 1,201,214,940.18/39,784.34
  6. Step 6: Final answer
    x = 30,193.16

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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.