Home / 39,887.48-55,044-21,738.36

Finding the Fourth Proportional to 39,887.48, 55,044 and 21,738.36

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Solution

The fourth proportional to 39,887.48, 55,044 and 21,738.36 is: 29,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.48 : 55,044 = 21,738.36 : x
  2. Step 2: Convert to fraction form
    39,887.48/55,044 = 21,738.36/x
  3. Step 3: Cross multiply
    39,887.48x = 55,044 × 21,738.36
  4. Step 4: Simplify right side
    39,887.48x = 1,196,566,287.84
  5. Step 5: Solve for x
    x = 1,196,566,287.84/39,887.48
  6. Step 6: Final answer
    x = 29,998.54

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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.