Home / 18,722.85-28,093.02-8,191.50

Finding the Fourth Proportional to 18,722.85, 28,093.02 and 8,191.50

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Solution

The fourth proportional to 18,722.85, 28,093.02 and 8,191.50 is: 12,291.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.85 : 28,093.02 = 8,191.50 : x
  2. Step 2: Convert to fraction form
    18,722.85/28,093.02 = 8,191.50/x
  3. Step 3: Cross multiply
    18,722.85x = 28,093.02 × 8,191.50
  4. Step 4: Simplify right side
    18,722.85x = 230,123,973.33
  5. Step 5: Solve for x
    x = 230,123,973.33/18,722.85
  6. Step 6: Final answer
    x = 12,291.08

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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.