Home / 28,609.55-42,920.51-11,742.60

Finding the Fourth Proportional to 28,609.55, 42,920.51 and 11,742.60

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Solution

The fourth proportional to 28,609.55, 42,920.51 and 11,742.60 is: 17,616.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.55 : 42,920.51 = 11,742.60 : x
  2. Step 2: Convert to fraction form
    28,609.55/42,920.51 = 11,742.60/x
  3. Step 3: Cross multiply
    28,609.55x = 42,920.51 × 11,742.60
  4. Step 4: Simplify right side
    28,609.55x = 503,998,380.73
  5. Step 5: Solve for x
    x = 503,998,380.73/28,609.55
  6. Step 6: Final answer
    x = 17,616.44

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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.