Home / 18,918.20-28,377.23-5,770.53

Finding the Fourth Proportional to 18,918.20, 28,377.23 and 5,770.53

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Solution

The fourth proportional to 18,918.20, 28,377.23 and 5,770.53 is: 8,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.20 : 28,377.23 = 5,770.53 : x
  2. Step 2: Convert to fraction form
    18,918.20/28,377.23 = 5,770.53/x
  3. Step 3: Cross multiply
    18,918.20x = 28,377.23 × 5,770.53
  4. Step 4: Simplify right side
    18,918.20x = 163,751,628.18
  5. Step 5: Solve for x
    x = 163,751,628.18/18,918.20
  6. Step 6: Final answer
    x = 8,655.77

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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.