Home / 20,083.32-30,128.40-6,932.61

Finding the Fourth Proportional to 20,083.32, 30,128.40 and 6,932.61

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Solution

The fourth proportional to 20,083.32, 30,128.40 and 6,932.61 is: 10,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.32 : 30,128.40 = 6,932.61 : x
  2. Step 2: Convert to fraction form
    20,083.32/30,128.40 = 6,932.61/x
  3. Step 3: Cross multiply
    20,083.32x = 30,128.40 × 6,932.61
  4. Step 4: Simplify right side
    20,083.32x = 208,868,447.12
  5. Step 5: Solve for x
    x = 208,868,447.12/20,083.32
  6. Step 6: Final answer
    x = 10,400.10

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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.