Home / 18,741.04-28,120.74-8,209.63

Finding the Fourth Proportional to 18,741.04, 28,120.74 and 8,209.63

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Solution

The fourth proportional to 18,741.04, 28,120.74 and 8,209.63 is: 12,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.04 : 28,120.74 = 8,209.63 : x
  2. Step 2: Convert to fraction form
    18,741.04/28,120.74 = 8,209.63/x
  3. Step 3: Cross multiply
    18,741.04x = 28,120.74 × 8,209.63
  4. Step 4: Simplify right side
    18,741.04x = 230,860,870.73
  5. Step 5: Solve for x
    x = 230,860,870.73/18,741.04
  6. Step 6: Final answer
    x = 12,318.47

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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.