Home / 20,748.89-28,633.29-11,317.25

Finding the Fourth Proportional to 20,748.89, 28,633.29 and 11,317.25

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Solution

The fourth proportional to 20,748.89, 28,633.29 and 11,317.25 is: 15,617.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.89 : 28,633.29 = 11,317.25 : x
  2. Step 2: Convert to fraction form
    20,748.89/28,633.29 = 11,317.25/x
  3. Step 3: Cross multiply
    20,748.89x = 28,633.29 × 11,317.25
  4. Step 4: Simplify right side
    20,748.89x = 324,050,101.25
  5. Step 5: Solve for x
    x = 324,050,101.25/20,748.89
  6. Step 6: Final answer
    x = 15,617.71

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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.