Home / 18,818.88-28,174.56-12,651.84

Finding the Fourth Proportional to 18,818.88, 28,174.56 and 12,651.84

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Solution

The fourth proportional to 18,818.88, 28,174.56 and 12,651.84 is: 18,941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.88 : 28,174.56 = 12,651.84 : x
  2. Step 2: Convert to fraction form
    18,818.88/28,174.56 = 12,651.84/x
  3. Step 3: Cross multiply
    18,818.88x = 28,174.56 × 12,651.84
  4. Step 4: Simplify right side
    18,818.88x = 356,460,025.19
  5. Step 5: Solve for x
    x = 356,460,025.19/18,818.88
  6. Step 6: Final answer
    x = 18,941.62

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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.