Home / 18,729.20-28,166.70-16,833.80

Finding the Fourth Proportional to 18,729.20, 28,166.70 and 16,833.80

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Solution

The fourth proportional to 18,729.20, 28,166.70 and 16,833.80 is: 25,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.20 : 28,166.70 = 16,833.80 : x
  2. Step 2: Convert to fraction form
    18,729.20/28,166.70 = 16,833.80/x
  3. Step 3: Cross multiply
    18,729.20x = 28,166.70 × 16,833.80
  4. Step 4: Simplify right side
    18,729.20x = 474,152,594.46
  5. Step 5: Solve for x
    x = 474,152,594.46/18,729.20
  6. Step 6: Final answer
    x = 25,316.22

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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.