Home / 20,755.08-28,638.52-19,704.24

Finding the Fourth Proportional to 20,755.08, 28,638.52 and 19,704.24

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Solution

The fourth proportional to 20,755.08, 28,638.52 and 19,704.24 is: 27,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.08 : 28,638.52 = 19,704.24 : x
  2. Step 2: Convert to fraction form
    20,755.08/28,638.52 = 19,704.24/x
  3. Step 3: Cross multiply
    20,755.08x = 28,638.52 × 19,704.24
  4. Step 4: Simplify right side
    20,755.08x = 564,300,271.32
  5. Step 5: Solve for x
    x = 564,300,271.32/20,755.08
  6. Step 6: Final answer
    x = 27,188.54

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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.