Home / 28,112.24-38,805-16,940.72

Finding the Fourth Proportional to 28,112.24, 38,805 and 16,940.72

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Solution

The fourth proportional to 28,112.24, 38,805 and 16,940.72 is: 23,384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.24 : 38,805 = 16,940.72 : x
  2. Step 2: Convert to fraction form
    28,112.24/38,805 = 16,940.72/x
  3. Step 3: Cross multiply
    28,112.24x = 38,805 × 16,940.72
  4. Step 4: Simplify right side
    28,112.24x = 657,384,639.60
  5. Step 5: Solve for x
    x = 657,384,639.60/28,112.24
  6. Step 6: Final answer
    x = 23,384.29

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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.