Home / 18,918.58-28,377.79-5,770.91

Finding the Fourth Proportional to 18,918.58, 28,377.79 and 5,770.91

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Solution

The fourth proportional to 18,918.58, 28,377.79 and 5,770.91 is: 8,656.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.58 : 28,377.79 = 5,770.91 : x
  2. Step 2: Convert to fraction form
    18,918.58/28,377.79 = 5,770.91/x
  3. Step 3: Cross multiply
    18,918.58x = 28,377.79 × 5,770.91
  4. Step 4: Simplify right side
    18,918.58x = 163,765,515.77
  5. Step 5: Solve for x
    x = 163,765,515.77/18,918.58
  6. Step 6: Final answer
    x = 8,656.33

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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.