Home / 20,632.71-28,473.24-11,201.25

Finding the Fourth Proportional to 20,632.71, 28,473.24 and 11,201.25

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Solution

The fourth proportional to 20,632.71, 28,473.24 and 11,201.25 is: 15,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.71 : 28,473.24 = 11,201.25 : x
  2. Step 2: Convert to fraction form
    20,632.71/28,473.24 = 11,201.25/x
  3. Step 3: Cross multiply
    20,632.71x = 28,473.24 × 11,201.25
  4. Step 4: Simplify right side
    20,632.71x = 318,935,879.55
  5. Step 5: Solve for x
    x = 318,935,879.55/20,632.71
  6. Step 6: Final answer
    x = 15,457.78

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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.