Home / 18,827.25-28,231.78-10,931.75

Finding the Fourth Proportional to 18,827.25, 28,231.78 and 10,931.75

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Solution

The fourth proportional to 18,827.25, 28,231.78 and 10,931.75 is: 16,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.25 : 28,231.78 = 10,931.75 : x
  2. Step 2: Convert to fraction form
    18,827.25/28,231.78 = 10,931.75/x
  3. Step 3: Cross multiply
    18,827.25x = 28,231.78 × 10,931.75
  4. Step 4: Simplify right side
    18,827.25x = 308,622,706.36
  5. Step 5: Solve for x
    x = 308,622,706.36/18,827.25
  6. Step 6: Final answer
    x = 16,392.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.