Home / 13,947.69-19,251.47-8,639.49

Finding the Fourth Proportional to 13,947.69, 19,251.47 and 8,639.49

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Solution

The fourth proportional to 13,947.69, 19,251.47 and 8,639.49 is: 11,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.69 : 19,251.47 = 8,639.49 : x
  2. Step 2: Convert to fraction form
    13,947.69/19,251.47 = 8,639.49/x
  3. Step 3: Cross multiply
    13,947.69x = 19,251.47 × 8,639.49
  4. Step 4: Simplify right side
    13,947.69x = 166,322,839.35
  5. Step 5: Solve for x
    x = 166,322,839.35/13,947.69
  6. Step 6: Final answer
    x = 11,924.76

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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.