Home / 20,669.72-28,524.30-12,286.28

Finding the Fourth Proportional to 20,669.72, 28,524.30 and 12,286.28

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Solution

The fourth proportional to 20,669.72, 28,524.30 and 12,286.28 is: 16,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.72 : 28,524.30 = 12,286.28 : x
  2. Step 2: Convert to fraction form
    20,669.72/28,524.30 = 12,286.28/x
  3. Step 3: Cross multiply
    20,669.72x = 28,524.30 × 12,286.28
  4. Step 4: Simplify right side
    20,669.72x = 350,457,536.60
  5. Step 5: Solve for x
    x = 350,457,536.60/20,669.72
  6. Step 6: Final answer
    x = 16,955.12

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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.