Home / 20,738.66-28,623.82-12,237.62

Finding the Fourth Proportional to 20,738.66, 28,623.82 and 12,237.62

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Solution

The fourth proportional to 20,738.66, 28,623.82 and 12,237.62 is: 16,890.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.66 : 28,623.82 = 12,237.62 : x
  2. Step 2: Convert to fraction form
    20,738.66/28,623.82 = 12,237.62/x
  3. Step 3: Cross multiply
    20,738.66x = 28,623.82 × 12,237.62
  4. Step 4: Simplify right side
    20,738.66x = 350,287,432.11
  5. Step 5: Solve for x
    x = 350,287,432.11/20,738.66
  6. Step 6: Final answer
    x = 16,890.55

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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.