Home / 18,744.72-28,117.58-8,209.32

Finding the Fourth Proportional to 18,744.72, 28,117.58 and 8,209.32

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Solution

The fourth proportional to 18,744.72, 28,117.58 and 8,209.32 is: 12,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.72 : 28,117.58 = 8,209.32 : x
  2. Step 2: Convert to fraction form
    18,744.72/28,117.58 = 8,209.32/x
  3. Step 3: Cross multiply
    18,744.72x = 28,117.58 × 8,209.32
  4. Step 4: Simplify right side
    18,744.72x = 230,826,170.80
  5. Step 5: Solve for x
    x = 230,826,170.80/18,744.72
  6. Step 6: Final answer
    x = 12,314.20

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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.