Home / 28,405.35-39,193.07-16,305.09

Finding the Fourth Proportional to 28,405.35, 39,193.07 and 16,305.09

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Solution

The fourth proportional to 28,405.35, 39,193.07 and 16,305.09 is: 22,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.35 : 39,193.07 = 16,305.09 : x
  2. Step 2: Convert to fraction form
    28,405.35/39,193.07 = 16,305.09/x
  3. Step 3: Cross multiply
    28,405.35x = 39,193.07 × 16,305.09
  4. Step 4: Simplify right side
    28,405.35x = 639,046,533.73
  5. Step 5: Solve for x
    x = 639,046,533.73/28,405.35
  6. Step 6: Final answer
    x = 22,497.40

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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.