Home / 12,021.40-18,002.88-8,313.16

Finding the Fourth Proportional to 12,021.40, 18,002.88 and 8,313.16

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Solution

The fourth proportional to 12,021.40, 18,002.88 and 8,313.16 is: 12,449.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.40 : 18,002.88 = 8,313.16 : x
  2. Step 2: Convert to fraction form
    12,021.40/18,002.88 = 8,313.16/x
  3. Step 3: Cross multiply
    12,021.40x = 18,002.88 × 8,313.16
  4. Step 4: Simplify right side
    12,021.40x = 149,660,821.90
  5. Step 5: Solve for x
    x = 149,660,821.90/12,021.40
  6. Step 6: Final answer
    x = 12,449.53

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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.