Home / 19,155.45-28,732.88-8,618.03

Finding the Fourth Proportional to 19,155.45, 28,732.88 and 8,618.03

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Solution

The fourth proportional to 19,155.45, 28,732.88 and 8,618.03 is: 12,926.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.45 : 28,732.88 = 8,618.03 : x
  2. Step 2: Convert to fraction form
    19,155.45/28,732.88 = 8,618.03/x
  3. Step 3: Cross multiply
    19,155.45x = 28,732.88 × 8,618.03
  4. Step 4: Simplify right side
    19,155.45x = 247,620,767.05
  5. Step 5: Solve for x
    x = 247,620,767.05/19,155.45
  6. Step 6: Final answer
    x = 12,926.91

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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.