Home / 28,227.25-38,953-16,128.28

Finding the Fourth Proportional to 28,227.25, 38,953 and 16,128.28

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Solution

The fourth proportional to 28,227.25, 38,953 and 16,128.28 is: 22,256.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.25 : 38,953 = 16,128.28 : x
  2. Step 2: Convert to fraction form
    28,227.25/38,953 = 16,128.28/x
  3. Step 3: Cross multiply
    28,227.25x = 38,953 × 16,128.28
  4. Step 4: Simplify right side
    28,227.25x = 628,244,890.84
  5. Step 5: Solve for x
    x = 628,244,890.84/28,227.25
  6. Step 6: Final answer
    x = 22,256.68

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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.