Home / 12,139.21-18,214.49-6,292.63

Finding the Fourth Proportional to 12,139.21, 18,214.49 and 6,292.63

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Solution

The fourth proportional to 12,139.21, 18,214.49 and 6,292.63 is: 9,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.21 : 18,214.49 = 6,292.63 : x
  2. Step 2: Convert to fraction form
    12,139.21/18,214.49 = 6,292.63/x
  3. Step 3: Cross multiply
    12,139.21x = 18,214.49 × 6,292.63
  4. Step 4: Simplify right side
    12,139.21x = 114,617,046.21
  5. Step 5: Solve for x
    x = 114,617,046.21/12,139.21
  6. Step 6: Final answer
    x = 9,441.89

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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.