Home / 39,887.83-55,046.36-21,983.99

Finding the Fourth Proportional to 39,887.83, 55,046.36 and 21,983.99

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Solution

The fourth proportional to 39,887.83, 55,046.36 and 21,983.99 is: 30,338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.83 : 55,046.36 = 21,983.99 : x
  2. Step 2: Convert to fraction form
    39,887.83/55,046.36 = 21,983.99/x
  3. Step 3: Cross multiply
    39,887.83x = 55,046.36 × 21,983.99
  4. Step 4: Simplify right side
    39,887.83x = 1,210,138,782.93
  5. Step 5: Solve for x
    x = 1,210,138,782.93/39,887.83
  6. Step 6: Final answer
    x = 30,338.54

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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.