Home / 28,163.03-42,205.14-18,686.48

Finding the Fourth Proportional to 28,163.03, 42,205.14 and 18,686.48

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Solution

The fourth proportional to 28,163.03, 42,205.14 and 18,686.48 is: 28,003.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.03 : 42,205.14 = 18,686.48 : x
  2. Step 2: Convert to fraction form
    28,163.03/42,205.14 = 18,686.48/x
  3. Step 3: Cross multiply
    28,163.03x = 42,205.14 × 18,686.48
  4. Step 4: Simplify right side
    28,163.03x = 788,665,293.48
  5. Step 5: Solve for x
    x = 788,665,293.48/28,163.03
  6. Step 6: Final answer
    x = 28,003.57

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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.