Home / 20,238.15-30,338.85-7,083.35

Finding the Fourth Proportional to 20,238.15, 30,338.85 and 7,083.35

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Solution

The fourth proportional to 20,238.15, 30,338.85 and 7,083.35 is: 10,618.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.15 : 30,338.85 = 7,083.35 : x
  2. Step 2: Convert to fraction form
    20,238.15/30,338.85 = 7,083.35/x
  3. Step 3: Cross multiply
    20,238.15x = 30,338.85 × 7,083.35
  4. Step 4: Simplify right side
    20,238.15x = 214,900,655.22
  5. Step 5: Solve for x
    x = 214,900,655.22/20,238.15
  6. Step 6: Final answer
    x = 10,618.59

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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.