Home / 20,599.86-28,431.36-11,650.14

Finding the Fourth Proportional to 20,599.86, 28,431.36 and 11,650.14

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Solution

The fourth proportional to 20,599.86, 28,431.36 and 11,650.14 is: 16,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.86 : 28,431.36 = 11,650.14 : x
  2. Step 2: Convert to fraction form
    20,599.86/28,431.36 = 11,650.14/x
  3. Step 3: Cross multiply
    20,599.86x = 28,431.36 × 11,650.14
  4. Step 4: Simplify right side
    20,599.86x = 331,229,324.39
  5. Step 5: Solve for x
    x = 331,229,324.39/20,599.86
  6. Step 6: Final answer
    x = 16,079.20

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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.