Home / 12,421.44-18,636.30-5,021.88

Finding the Fourth Proportional to 12,421.44, 18,636.30 and 5,021.88

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Solution

The fourth proportional to 12,421.44, 18,636.30 and 5,021.88 is: 7,534.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.44 : 18,636.30 = 5,021.88 : x
  2. Step 2: Convert to fraction form
    12,421.44/18,636.30 = 5,021.88/x
  3. Step 3: Cross multiply
    12,421.44x = 18,636.30 × 5,021.88
  4. Step 4: Simplify right side
    12,421.44x = 93,589,262.24
  5. Step 5: Solve for x
    x = 93,589,262.24/12,421.44
  6. Step 6: Final answer
    x = 7,534.49

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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.