Home / 28,812.03-39,737.55-19,857.48

Finding the Fourth Proportional to 28,812.03, 39,737.55 and 19,857.48

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Solution

The fourth proportional to 28,812.03, 39,737.55 and 19,857.48 is: 27,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.03 : 39,737.55 = 19,857.48 : x
  2. Step 2: Convert to fraction form
    28,812.03/39,737.55 = 19,857.48/x
  3. Step 3: Cross multiply
    28,812.03x = 39,737.55 × 19,857.48
  4. Step 4: Simplify right side
    28,812.03x = 789,087,604.37
  5. Step 5: Solve for x
    x = 789,087,604.37/28,812.03
  6. Step 6: Final answer
    x = 27,387.44

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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.