Home / 11,863.36-16,384.40-7,901.28

Finding the Fourth Proportional to 11,863.36, 16,384.40 and 7,901.28

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Solution

The fourth proportional to 11,863.36, 16,384.40 and 7,901.28 is: 10,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,863.36 : 16,384.40 = 7,901.28 : x
  2. Step 2: Convert to fraction form
    11,863.36/16,384.40 = 7,901.28/x
  3. Step 3: Cross multiply
    11,863.36x = 16,384.40 × 7,901.28
  4. Step 4: Simplify right side
    11,863.36x = 129,457,732.03
  5. Step 5: Solve for x
    x = 129,457,732.03/11,863.36
  6. Step 6: Final answer
    x = 10,912.40

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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.