Home / 28,456.74-39,270.42-16,520.58

Finding the Fourth Proportional to 28,456.74, 39,270.42 and 16,520.58

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Solution

The fourth proportional to 28,456.74, 39,270.42 and 16,520.58 is: 22,798.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.74 : 39,270.42 = 16,520.58 : x
  2. Step 2: Convert to fraction form
    28,456.74/39,270.42 = 16,520.58/x
  3. Step 3: Cross multiply
    28,456.74x = 39,270.42 × 16,520.58
  4. Step 4: Simplify right side
    28,456.74x = 648,770,115.24
  5. Step 5: Solve for x
    x = 648,770,115.24/28,456.74
  6. Step 6: Final answer
    x = 22,798.47

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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.