Home / 20,622.33-28,457.46-11,670.75

Finding the Fourth Proportional to 20,622.33, 28,457.46 and 11,670.75

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Solution

The fourth proportional to 20,622.33, 28,457.46 and 11,670.75 is: 16,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.33 : 28,457.46 = 11,670.75 : x
  2. Step 2: Convert to fraction form
    20,622.33/28,457.46 = 11,670.75/x
  3. Step 3: Cross multiply
    20,622.33x = 28,457.46 × 11,670.75
  4. Step 4: Simplify right side
    20,622.33x = 332,119,901.30
  5. Step 5: Solve for x
    x = 332,119,901.30/20,622.33
  6. Step 6: Final answer
    x = 16,104.87

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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.