Home / 13,443.28-20,165.72-4,083.61

Finding the Fourth Proportional to 13,443.28, 20,165.72 and 4,083.61

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Solution

The fourth proportional to 13,443.28, 20,165.72 and 4,083.61 is: 6,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.28 : 20,165.72 = 4,083.61 : x
  2. Step 2: Convert to fraction form
    13,443.28/20,165.72 = 4,083.61/x
  3. Step 3: Cross multiply
    13,443.28x = 20,165.72 × 4,083.61
  4. Step 4: Simplify right side
    13,443.28x = 82,348,935.85
  5. Step 5: Solve for x
    x = 82,348,935.85/13,443.28
  6. Step 6: Final answer
    x = 6,125.66

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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.