Home / 20,934.28-28,890.90-11,984.58

Finding the Fourth Proportional to 20,934.28, 28,890.90 and 11,984.58

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Solution

The fourth proportional to 20,934.28, 28,890.90 and 11,984.58 is: 16,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.28 : 28,890.90 = 11,984.58 : x
  2. Step 2: Convert to fraction form
    20,934.28/28,890.90 = 11,984.58/x
  3. Step 3: Cross multiply
    20,934.28x = 28,890.90 × 11,984.58
  4. Step 4: Simplify right side
    20,934.28x = 346,245,302.32
  5. Step 5: Solve for x
    x = 346,245,302.32/20,934.28
  6. Step 6: Final answer
    x = 16,539.63

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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.