Home / 28,223.05-42,251.53-18,839.80

Finding the Fourth Proportional to 28,223.05, 42,251.53 and 18,839.80

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Solution

The fourth proportional to 28,223.05, 42,251.53 and 18,839.80 is: 28,204.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.05 : 42,251.53 = 18,839.80 : x
  2. Step 2: Convert to fraction form
    28,223.05/42,251.53 = 18,839.80/x
  3. Step 3: Cross multiply
    28,223.05x = 42,251.53 × 18,839.80
  4. Step 4: Simplify right side
    28,223.05x = 796,010,316.36
  5. Step 5: Solve for x
    x = 796,010,316.36/28,223.05
  6. Step 6: Final answer
    x = 28,204.26

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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.