Home / 20,719.86-28,610.28-16,892.12

Finding the Fourth Proportional to 20,719.86, 28,610.28 and 16,892.12

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Solution

The fourth proportional to 20,719.86, 28,610.28 and 16,892.12 is: 23,324.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.86 : 28,610.28 = 16,892.12 : x
  2. Step 2: Convert to fraction form
    20,719.86/28,610.28 = 16,892.12/x
  3. Step 3: Cross multiply
    20,719.86x = 28,610.28 × 16,892.12
  4. Step 4: Simplify right side
    20,719.86x = 483,288,139.94
  5. Step 5: Solve for x
    x = 483,288,139.94/20,719.86
  6. Step 6: Final answer
    x = 23,324.87

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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.