Home / 28,414-39,211.32-15,839.56

Finding the Fourth Proportional to 28,414, 39,211.32 and 15,839.56

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Solution

The fourth proportional to 28,414, 39,211.32 and 15,839.56 is: 21,858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414 : 39,211.32 = 15,839.56 : x
  2. Step 2: Convert to fraction form
    28,414/39,211.32 = 15,839.56/x
  3. Step 3: Cross multiply
    28,414x = 39,211.32 × 15,839.56
  4. Step 4: Simplify right side
    28,414x = 621,090,055.82
  5. Step 5: Solve for x
    x = 621,090,055.82/28,414
  6. Step 6: Final answer
    x = 21,858.59

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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.