Home / 20,863.08-31,108.52-18,544.86

Finding the Fourth Proportional to 20,863.08, 31,108.52 and 18,544.86

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Solution

The fourth proportional to 20,863.08, 31,108.52 and 18,544.86 is: 27,651.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.08 : 31,108.52 = 18,544.86 : x
  2. Step 2: Convert to fraction form
    20,863.08/31,108.52 = 18,544.86/x
  3. Step 3: Cross multiply
    20,863.08x = 31,108.52 × 18,544.86
  4. Step 4: Simplify right side
    20,863.08x = 576,903,055.48
  5. Step 5: Solve for x
    x = 576,903,055.48/20,863.08
  6. Step 6: Final answer
    x = 27,651.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.