Home / 18,891.69-28,338.55-5,743.07

Finding the Fourth Proportional to 18,891.69, 28,338.55 and 5,743.07

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Solution

The fourth proportional to 18,891.69, 28,338.55 and 5,743.07 is: 8,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.69 : 28,338.55 = 5,743.07 : x
  2. Step 2: Convert to fraction form
    18,891.69/28,338.55 = 5,743.07/x
  3. Step 3: Cross multiply
    18,891.69x = 28,338.55 × 5,743.07
  4. Step 4: Simplify right side
    18,891.69x = 162,750,276.35
  5. Step 5: Solve for x
    x = 162,750,276.35/18,891.69
  6. Step 6: Final answer
    x = 8,614.91

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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.