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Finding the Fourth Proportional to 20,457.67, 30,629.37 and 11,064.03

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Solution

The fourth proportional to 20,457.67, 30,629.37 and 11,064.03 is: 16,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.67 : 30,629.37 = 11,064.03 : x
  2. Step 2: Convert to fraction form
    20,457.67/30,629.37 = 11,064.03/x
  3. Step 3: Cross multiply
    20,457.67x = 30,629.37 × 11,064.03
  4. Step 4: Simplify right side
    20,457.67x = 338,884,340.54
  5. Step 5: Solve for x
    x = 338,884,340.54/20,457.67
  6. Step 6: Final answer
    x = 16,565.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.