Home / 20,818.32-28,732.02-11,863.77

Finding the Fourth Proportional to 20,818.32, 28,732.02 and 11,863.77

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Solution

The fourth proportional to 20,818.32, 28,732.02 and 11,863.77 is: 16,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.32 : 28,732.02 = 11,863.77 : x
  2. Step 2: Convert to fraction form
    20,818.32/28,732.02 = 11,863.77/x
  3. Step 3: Cross multiply
    20,818.32x = 28,732.02 × 11,863.77
  4. Step 4: Simplify right side
    20,818.32x = 340,870,076.92
  5. Step 5: Solve for x
    x = 340,870,076.92/20,818.32
  6. Step 6: Final answer
    x = 16,373.56

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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.