Home / 20,764.98-28,655.37-12,267

Finding the Fourth Proportional to 20,764.98, 28,655.37 and 12,267

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Solution

The fourth proportional to 20,764.98, 28,655.37 and 12,267 is: 16,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.98 : 28,655.37 = 12,267 : x
  2. Step 2: Convert to fraction form
    20,764.98/28,655.37 = 12,267/x
  3. Step 3: Cross multiply
    20,764.98x = 28,655.37 × 12,267
  4. Step 4: Simplify right side
    20,764.98x = 351,515,423.79
  5. Step 5: Solve for x
    x = 351,515,423.79/20,764.98
  6. Step 6: Final answer
    x = 16,928.28

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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.