Home / 12,129.57-18,197.33-4,230.99

Finding the Fourth Proportional to 12,129.57, 18,197.33 and 4,230.99

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Solution

The fourth proportional to 12,129.57, 18,197.33 and 4,230.99 is: 6,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.57 : 18,197.33 = 4,230.99 : x
  2. Step 2: Convert to fraction form
    12,129.57/18,197.33 = 4,230.99/x
  3. Step 3: Cross multiply
    12,129.57x = 18,197.33 × 4,230.99
  4. Step 4: Simplify right side
    12,129.57x = 76,992,700.10
  5. Step 5: Solve for x
    x = 76,992,700.10/12,129.57
  6. Step 6: Final answer
    x = 6,347.52

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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.