Home / 28,199.88-38,918.34-16,101.72

Finding the Fourth Proportional to 28,199.88, 38,918.34 and 16,101.72

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Solution

The fourth proportional to 28,199.88, 38,918.34 and 16,101.72 is: 22,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.88 : 38,918.34 = 16,101.72 : x
  2. Step 2: Convert to fraction form
    28,199.88/38,918.34 = 16,101.72/x
  3. Step 3: Cross multiply
    28,199.88x = 38,918.34 × 16,101.72
  4. Step 4: Simplify right side
    28,199.88x = 626,652,213.54
  5. Step 5: Solve for x
    x = 626,652,213.54/28,199.88
  6. Step 6: Final answer
    x = 22,221.80

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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.