Home / 28,163.24-38,865.87-15,587.99

Finding the Fourth Proportional to 28,163.24, 38,865.87 and 15,587.99

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Solution

The fourth proportional to 28,163.24, 38,865.87 and 15,587.99 is: 21,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.24 : 38,865.87 = 15,587.99 : x
  2. Step 2: Convert to fraction form
    28,163.24/38,865.87 = 15,587.99/x
  3. Step 3: Cross multiply
    28,163.24x = 38,865.87 × 15,587.99
  4. Step 4: Simplify right side
    28,163.24x = 605,840,618.06
  5. Step 5: Solve for x
    x = 605,840,618.06/28,163.24
  6. Step 6: Final answer
    x = 21,511.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.