Home / 28,609.80-42,920.88-11,742.85

Finding the Fourth Proportional to 28,609.80, 42,920.88 and 11,742.85

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Solution

The fourth proportional to 28,609.80, 42,920.88 and 11,742.85 is: 17,616.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.80 : 42,920.88 = 11,742.85 : x
  2. Step 2: Convert to fraction form
    28,609.80/42,920.88 = 11,742.85/x
  3. Step 3: Cross multiply
    28,609.80x = 42,920.88 × 11,742.85
  4. Step 4: Simplify right side
    28,609.80x = 504,013,455.71
  5. Step 5: Solve for x
    x = 504,013,455.71/28,609.80
  6. Step 6: Final answer
    x = 17,616.81

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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.