Home / 39,887.26-55,043.73-21,981.88

Finding the Fourth Proportional to 39,887.26, 55,043.73 and 21,981.88

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Solution

The fourth proportional to 39,887.26, 55,043.73 and 21,981.88 is: 30,334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.26 : 55,043.73 = 21,981.88 : x
  2. Step 2: Convert to fraction form
    39,887.26/55,043.73 = 21,981.88/x
  3. Step 3: Cross multiply
    39,887.26x = 55,043.73 × 21,981.88
  4. Step 4: Simplify right side
    39,887.26x = 1,209,964,667.61
  5. Step 5: Solve for x
    x = 1,209,964,667.61/39,887.26
  6. Step 6: Final answer
    x = 30,334.61

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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.