Home / 28,228.86-38,954.27-16,128.88

Finding the Fourth Proportional to 28,228.86, 38,954.27 and 16,128.88

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Solution

The fourth proportional to 28,228.86, 38,954.27 and 16,128.88 is: 22,256.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.86 : 38,954.27 = 16,128.88 : x
  2. Step 2: Convert to fraction form
    28,228.86/38,954.27 = 16,128.88/x
  3. Step 3: Cross multiply
    28,228.86x = 38,954.27 × 16,128.88
  4. Step 4: Simplify right side
    28,228.86x = 628,288,689.25
  5. Step 5: Solve for x
    x = 628,288,689.25/28,228.86
  6. Step 6: Final answer
    x = 22,256.96

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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.