Home / 28,195.86-42,273.78-14,145.78

Finding the Fourth Proportional to 28,195.86, 42,273.78 and 14,145.78

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Solution

The fourth proportional to 28,195.86, 42,273.78 and 14,145.78 is: 21,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.86 : 42,273.78 = 14,145.78 : x
  2. Step 2: Convert to fraction form
    28,195.86/42,273.78 = 14,145.78/x
  3. Step 3: Cross multiply
    28,195.86x = 42,273.78 × 14,145.78
  4. Step 4: Simplify right side
    28,195.86x = 597,995,591.65
  5. Step 5: Solve for x
    x = 597,995,591.65/28,195.86
  6. Step 6: Final answer
    x = 21,208.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.