Home / 20,539.14-28,281.88-16,940.72

Finding the Fourth Proportional to 20,539.14, 28,281.88 and 16,940.72

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Solution

The fourth proportional to 20,539.14, 28,281.88 and 16,940.72 is: 23,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.14 : 28,281.88 = 16,940.72 : x
  2. Step 2: Convert to fraction form
    20,539.14/28,281.88 = 16,940.72/x
  3. Step 3: Cross multiply
    20,539.14x = 28,281.88 × 16,940.72
  4. Step 4: Simplify right side
    20,539.14x = 479,115,410.15
  5. Step 5: Solve for x
    x = 479,115,410.15/20,539.14
  6. Step 6: Final answer
    x = 23,326.95

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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.