Home / 20,145.44-30,230.40-8,459.84

Finding the Fourth Proportional to 20,145.44, 30,230.40 and 8,459.84

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Solution

The fourth proportional to 20,145.44, 30,230.40 and 8,459.84 is: 12,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.44 : 30,230.40 = 8,459.84 : x
  2. Step 2: Convert to fraction form
    20,145.44/30,230.40 = 8,459.84/x
  3. Step 3: Cross multiply
    20,145.44x = 30,230.40 × 8,459.84
  4. Step 4: Simplify right side
    20,145.44x = 255,744,347.14
  5. Step 5: Solve for x
    x = 255,744,347.14/20,145.44
  6. Step 6: Final answer
    x = 12,694.90

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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.