Home / 20,720.86-28,611.66-16,893.12

Finding the Fourth Proportional to 20,720.86, 28,611.66 and 16,893.12

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Solution

The fourth proportional to 20,720.86, 28,611.66 and 16,893.12 is: 23,326.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.86 : 28,611.66 = 16,893.12 : x
  2. Step 2: Convert to fraction form
    20,720.86/28,611.66 = 16,893.12/x
  3. Step 3: Cross multiply
    20,720.86x = 28,611.66 × 16,893.12
  4. Step 4: Simplify right side
    20,720.86x = 483,340,205.78
  5. Step 5: Solve for x
    x = 483,340,205.78/20,720.86
  6. Step 6: Final answer
    x = 23,326.26

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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.