Home / 20,937.90-28,893.78-11,984.82

Finding the Fourth Proportional to 20,937.90, 28,893.78 and 11,984.82

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Solution

The fourth proportional to 20,937.90, 28,893.78 and 11,984.82 is: 16,538.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.90 : 28,893.78 = 11,984.82 : x
  2. Step 2: Convert to fraction form
    20,937.90/28,893.78 = 11,984.82/x
  3. Step 3: Cross multiply
    20,937.90x = 28,893.78 × 11,984.82
  4. Step 4: Simplify right side
    20,937.90x = 346,286,752.42
  5. Step 5: Solve for x
    x = 346,286,752.42/20,937.90
  6. Step 6: Final answer
    x = 16,538.75

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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.