Home / 20,178.21-30,267.34-9,645.75

Finding the Fourth Proportional to 20,178.21, 30,267.34 and 9,645.75

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Solution

The fourth proportional to 20,178.21, 30,267.34 and 9,645.75 is: 14,468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.21 : 30,267.34 = 9,645.75 : x
  2. Step 2: Convert to fraction form
    20,178.21/30,267.34 = 9,645.75/x
  3. Step 3: Cross multiply
    20,178.21x = 30,267.34 × 9,645.75
  4. Step 4: Simplify right side
    20,178.21x = 291,951,254.88
  5. Step 5: Solve for x
    x = 291,951,254.88/20,178.21
  6. Step 6: Final answer
    x = 14,468.64

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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.