Home / 20,932.86-28,884.99-12,431.94

Finding the Fourth Proportional to 20,932.86, 28,884.99 and 12,431.94

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Solution

The fourth proportional to 20,932.86, 28,884.99 and 12,431.94 is: 17,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.86 : 28,884.99 = 12,431.94 : x
  2. Step 2: Convert to fraction form
    20,932.86/28,884.99 = 12,431.94/x
  3. Step 3: Cross multiply
    20,932.86x = 28,884.99 × 12,431.94
  4. Step 4: Simplify right side
    20,932.86x = 359,096,462.58
  5. Step 5: Solve for x
    x = 359,096,462.58/20,932.86
  6. Step 6: Final answer
    x = 17,154.68

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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.