Home / 12,286.79-16,955.75-6,981.60

Finding the Fourth Proportional to 12,286.79, 16,955.75 and 6,981.60

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Solution

The fourth proportional to 12,286.79, 16,955.75 and 6,981.60 is: 9,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.79 : 16,955.75 = 6,981.60 : x
  2. Step 2: Convert to fraction form
    12,286.79/16,955.75 = 6,981.60/x
  3. Step 3: Cross multiply
    12,286.79x = 16,955.75 × 6,981.60
  4. Step 4: Simplify right side
    12,286.79x = 118,378,229.29
  5. Step 5: Solve for x
    x = 118,378,229.29/12,286.79
  6. Step 6: Final answer
    x = 9,634.60

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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.