Home / 13,731.94-18,931.75-10,908.68

Finding the Fourth Proportional to 13,731.94, 18,931.75 and 10,908.68

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Solution

The fourth proportional to 13,731.94, 18,931.75 and 10,908.68 is: 15,039.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.94 : 18,931.75 = 10,908.68 : x
  2. Step 2: Convert to fraction form
    13,731.94/18,931.75 = 10,908.68/x
  3. Step 3: Cross multiply
    13,731.94x = 18,931.75 × 10,908.68
  4. Step 4: Simplify right side
    13,731.94x = 206,520,422.65
  5. Step 5: Solve for x
    x = 206,520,422.65/13,731.94
  6. Step 6: Final answer
    x = 15,039.42

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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.