Home / 20,748.99-28,634.00-11,317.89

Finding the Fourth Proportional to 20,748.99, 28,634.00 and 11,317.89

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Solution

The fourth proportional to 20,748.99, 28,634.00 and 11,317.89 is: 15,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.99 : 28,634.00 = 11,317.89 : x
  2. Step 2: Convert to fraction form
    20,748.99/28,634.00 = 11,317.89/x
  3. Step 3: Cross multiply
    20,748.99x = 28,634.00 × 11,317.89
  4. Step 4: Simplify right side
    20,748.99x = 324,076,405.67
  5. Step 5: Solve for x
    x = 324,076,405.67/20,748.99
  6. Step 6: Final answer
    x = 15,618.90

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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.