Home / 20,218.14-30,327.48-8,539.56

Finding the Fourth Proportional to 20,218.14, 30,327.48 and 8,539.56

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Solution

The fourth proportional to 20,218.14, 30,327.48 and 8,539.56 is: 12,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.14 : 30,327.48 = 8,539.56 : x
  2. Step 2: Convert to fraction form
    20,218.14/30,327.48 = 8,539.56/x
  3. Step 3: Cross multiply
    20,218.14x = 30,327.48 × 8,539.56
  4. Step 4: Simplify right side
    20,218.14x = 258,983,335.11
  5. Step 5: Solve for x
    x = 258,983,335.11/20,218.14
  6. Step 6: Final answer
    x = 12,809.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.