Home / 20,486.31-30,684.50-16,936.08

Finding the Fourth Proportional to 20,486.31, 30,684.50 and 16,936.08

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Solution

The fourth proportional to 20,486.31, 30,684.50 and 16,936.08 is: 25,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.31 : 30,684.50 = 16,936.08 : x
  2. Step 2: Convert to fraction form
    20,486.31/30,684.50 = 16,936.08/x
  3. Step 3: Cross multiply
    20,486.31x = 30,684.50 × 16,936.08
  4. Step 4: Simplify right side
    20,486.31x = 519,675,146.76
  5. Step 5: Solve for x
    x = 519,675,146.76/20,486.31
  6. Step 6: Final answer
    x = 25,366.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.