Home / 20,458.98-28,223.39-12,487.37

Finding the Fourth Proportional to 20,458.98, 28,223.39 and 12,487.37

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Solution

The fourth proportional to 20,458.98, 28,223.39 and 12,487.37 is: 17,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.98 : 28,223.39 = 12,487.37 : x
  2. Step 2: Convert to fraction form
    20,458.98/28,223.39 = 12,487.37/x
  3. Step 3: Cross multiply
    20,458.98x = 28,223.39 × 12,487.37
  4. Step 4: Simplify right side
    20,458.98x = 352,435,733.44
  5. Step 5: Solve for x
    x = 352,435,733.44/20,458.98
  6. Step 6: Final answer
    x = 17,226.46

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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.