Home / 20,797.98-28,682.53-13,731.54

Finding the Fourth Proportional to 20,797.98, 28,682.53 and 13,731.54

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Solution

The fourth proportional to 20,797.98, 28,682.53 and 13,731.54 is: 18,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.98 : 28,682.53 = 13,731.54 : x
  2. Step 2: Convert to fraction form
    20,797.98/28,682.53 = 13,731.54/x
  3. Step 3: Cross multiply
    20,797.98x = 28,682.53 × 13,731.54
  4. Step 4: Simplify right side
    20,797.98x = 393,855,308.00
  5. Step 5: Solve for x
    x = 393,855,308.00/20,797.98
  6. Step 6: Final answer
    x = 18,937.19

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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.