Home / 28,487.54-39,257.31-20,514.71

Finding the Fourth Proportional to 28,487.54, 39,257.31 and 20,514.71

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Solution

The fourth proportional to 28,487.54, 39,257.31 and 20,514.71 is: 28,270.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.54 : 39,257.31 = 20,514.71 : x
  2. Step 2: Convert to fraction form
    28,487.54/39,257.31 = 20,514.71/x
  3. Step 3: Cross multiply
    28,487.54x = 39,257.31 × 20,514.71
  4. Step 4: Simplify right side
    28,487.54x = 805,352,330.03
  5. Step 5: Solve for x
    x = 805,352,330.03/28,487.54
  6. Step 6: Final answer
    x = 28,270.34

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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.