Home / 28,139.25-38,832.81-16,200.66

Finding the Fourth Proportional to 28,139.25, 38,832.81 and 16,200.66

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Solution

The fourth proportional to 28,139.25, 38,832.81 and 16,200.66 is: 22,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.25 : 38,832.81 = 16,200.66 : x
  2. Step 2: Convert to fraction form
    28,139.25/38,832.81 = 16,200.66/x
  3. Step 3: Cross multiply
    28,139.25x = 38,832.81 × 16,200.66
  4. Step 4: Simplify right side
    28,139.25x = 629,117,151.65
  5. Step 5: Solve for x
    x = 629,117,151.65/28,139.25
  6. Step 6: Final answer
    x = 22,357.28

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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.