Home / 12,142.49-16,752.78-6,836.28

Finding the Fourth Proportional to 12,142.49, 16,752.78 and 6,836.28

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Solution

The fourth proportional to 12,142.49, 16,752.78 and 6,836.28 is: 9,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.49 : 16,752.78 = 6,836.28 : x
  2. Step 2: Convert to fraction form
    12,142.49/16,752.78 = 6,836.28/x
  3. Step 3: Cross multiply
    12,142.49x = 16,752.78 × 6,836.28
  4. Step 4: Simplify right side
    12,142.49x = 114,526,694.86
  5. Step 5: Solve for x
    x = 114,526,694.86/12,142.49
  6. Step 6: Final answer
    x = 9,431.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.