Home / 13,724.49-18,945.09-8,426.46

Finding the Fourth Proportional to 13,724.49, 18,945.09 and 8,426.46

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Solution

The fourth proportional to 13,724.49, 18,945.09 and 8,426.46 is: 11,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.49 : 18,945.09 = 8,426.46 : x
  2. Step 2: Convert to fraction form
    13,724.49/18,945.09 = 8,426.46/x
  3. Step 3: Cross multiply
    13,724.49x = 18,945.09 × 8,426.46
  4. Step 4: Simplify right side
    13,724.49x = 159,640,043.08
  5. Step 5: Solve for x
    x = 159,640,043.08/13,724.49
  6. Step 6: Final answer
    x = 11,631.77

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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.