Home / 28,458.56-39,273.44-15,711.71

Finding the Fourth Proportional to 28,458.56, 39,273.44 and 15,711.71

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Solution

The fourth proportional to 28,458.56, 39,273.44 and 15,711.71 is: 21,682.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.56 : 39,273.44 = 15,711.71 : x
  2. Step 2: Convert to fraction form
    28,458.56/39,273.44 = 15,711.71/x
  3. Step 3: Cross multiply
    28,458.56x = 39,273.44 × 15,711.71
  4. Step 4: Simplify right side
    28,458.56x = 617,052,625.06
  5. Step 5: Solve for x
    x = 617,052,625.06/28,458.56
  6. Step 6: Final answer
    x = 21,682.49

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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.