Home / 20,321.96-28,043.75-11,369.84

Finding the Fourth Proportional to 20,321.96, 28,043.75 and 11,369.84

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Solution

The fourth proportional to 20,321.96, 28,043.75 and 11,369.84 is: 15,690.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.96 : 28,043.75 = 11,369.84 : x
  2. Step 2: Convert to fraction form
    20,321.96/28,043.75 = 11,369.84/x
  3. Step 3: Cross multiply
    20,321.96x = 28,043.75 × 11,369.84
  4. Step 4: Simplify right side
    20,321.96x = 318,852,950.50
  5. Step 5: Solve for x
    x = 318,852,950.50/20,321.96
  6. Step 6: Final answer
    x = 15,690.07

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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.