Home / 20,633.98-28,620.58-20,087.10

Finding the Fourth Proportional to 20,633.98, 28,620.58 and 20,087.10

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Solution

The fourth proportional to 20,633.98, 28,620.58 and 20,087.10 is: 27,862.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.98 : 28,620.58 = 20,087.10 : x
  2. Step 2: Convert to fraction form
    20,633.98/28,620.58 = 20,087.10/x
  3. Step 3: Cross multiply
    20,633.98x = 28,620.58 × 20,087.10
  4. Step 4: Simplify right side
    20,633.98x = 574,904,352.08
  5. Step 5: Solve for x
    x = 574,904,352.08/20,633.98
  6. Step 6: Final answer
    x = 27,862.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.