Home / 12,112.56-16,715.40-6,807.54

Finding the Fourth Proportional to 12,112.56, 16,715.40 and 6,807.54

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Solution

The fourth proportional to 12,112.56, 16,715.40 and 6,807.54 is: 9,394.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.56 : 16,715.40 = 6,807.54 : x
  2. Step 2: Convert to fraction form
    12,112.56/16,715.40 = 6,807.54/x
  3. Step 3: Cross multiply
    12,112.56x = 16,715.40 × 6,807.54
  4. Step 4: Simplify right side
    12,112.56x = 113,790,754.12
  5. Step 5: Solve for x
    x = 113,790,754.12/12,112.56
  6. Step 6: Final answer
    x = 9,394.44

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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.