Home / 18,765.95-28,162.82-15,112.31

Finding the Fourth Proportional to 18,765.95, 28,162.82 and 15,112.31

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Solution

The fourth proportional to 18,765.95, 28,162.82 and 15,112.31 is: 22,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.95 : 28,162.82 = 15,112.31 : x
  2. Step 2: Convert to fraction form
    18,765.95/28,162.82 = 15,112.31/x
  3. Step 3: Cross multiply
    18,765.95x = 28,162.82 × 15,112.31
  4. Step 4: Simplify right side
    18,765.95x = 425,605,163.28
  5. Step 5: Solve for x
    x = 425,605,163.28/18,765.95
  6. Step 6: Final answer
    x = 22,679.66

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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.