Home / 28,458.39-39,270.94-15,711.27

Finding the Fourth Proportional to 28,458.39, 39,270.94 and 15,711.27

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Solution

The fourth proportional to 28,458.39, 39,270.94 and 15,711.27 is: 21,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.39 : 39,270.94 = 15,711.27 : x
  2. Step 2: Convert to fraction form
    28,458.39/39,270.94 = 15,711.27/x
  3. Step 3: Cross multiply
    28,458.39x = 39,270.94 × 15,711.27
  4. Step 4: Simplify right side
    28,458.39x = 616,996,243.33
  5. Step 5: Solve for x
    x = 616,996,243.33/28,458.39
  6. Step 6: Final answer
    x = 21,680.65

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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.