Home / 11,921.84-16,453.62-6,886.40

Finding the Fourth Proportional to 11,921.84, 16,453.62 and 6,886.40

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Solution

The fourth proportional to 11,921.84, 16,453.62 and 6,886.40 is: 9,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.84 : 16,453.62 = 6,886.40 : x
  2. Step 2: Convert to fraction form
    11,921.84/16,453.62 = 6,886.40/x
  3. Step 3: Cross multiply
    11,921.84x = 16,453.62 × 6,886.40
  4. Step 4: Simplify right side
    11,921.84x = 113,306,208.77
  5. Step 5: Solve for x
    x = 113,306,208.77/11,921.84
  6. Step 6: Final answer
    x = 9,504.09

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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.