Home / 20,623.43-28,460.97-12,124

Finding the Fourth Proportional to 20,623.43, 28,460.97 and 12,124

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Solution

The fourth proportional to 20,623.43, 28,460.97 and 12,124 is: 16,731.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.43 : 28,460.97 = 12,124 : x
  2. Step 2: Convert to fraction form
    20,623.43/28,460.97 = 12,124/x
  3. Step 3: Cross multiply
    20,623.43x = 28,460.97 × 12,124
  4. Step 4: Simplify right side
    20,623.43x = 345,060,800.28
  5. Step 5: Solve for x
    x = 345,060,800.28/20,623.43
  6. Step 6: Final answer
    x = 16,731.49

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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.