Home / 36,921.88-50,945.38-21,005.40

Finding the Fourth Proportional to 36,921.88, 50,945.38 and 21,005.40

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Solution

The fourth proportional to 36,921.88, 50,945.38 and 21,005.40 is: 28,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,921.88 : 50,945.38 = 21,005.40 : x
  2. Step 2: Convert to fraction form
    36,921.88/50,945.38 = 21,005.40/x
  3. Step 3: Cross multiply
    36,921.88x = 50,945.38 × 21,005.40
  4. Step 4: Simplify right side
    36,921.88x = 1,070,128,085.05
  5. Step 5: Solve for x
    x = 1,070,128,085.05/36,921.88
  6. Step 6: Final answer
    x = 28,983.58

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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.