Home / 19,187.58-28,781.37-18,104.70

Finding the Fourth Proportional to 19,187.58, 28,781.37 and 18,104.70

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Solution

The fourth proportional to 19,187.58, 28,781.37 and 18,104.70 is: 27,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.58 : 28,781.37 = 18,104.70 : x
  2. Step 2: Convert to fraction form
    19,187.58/28,781.37 = 18,104.70/x
  3. Step 3: Cross multiply
    19,187.58x = 28,781.37 × 18,104.70
  4. Step 4: Simplify right side
    19,187.58x = 521,078,069.44
  5. Step 5: Solve for x
    x = 521,078,069.44/19,187.58
  6. Step 6: Final answer
    x = 27,157.05

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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.