Home / 18,327.88-25,279.43-16,820.31

Finding the Fourth Proportional to 18,327.88, 25,279.43 and 16,820.31

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Solution

The fourth proportional to 18,327.88, 25,279.43 and 16,820.31 is: 23,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,327.88 : 25,279.43 = 16,820.31 : x
  2. Step 2: Convert to fraction form
    18,327.88/25,279.43 = 16,820.31/x
  3. Step 3: Cross multiply
    18,327.88x = 25,279.43 × 16,820.31
  4. Step 4: Simplify right side
    18,327.88x = 425,207,717.72
  5. Step 5: Solve for x
    x = 425,207,717.72/18,327.88
  6. Step 6: Final answer
    x = 23,200.05

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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.