Home / 18,790.15-28,187.54-6,139.61

Finding the Fourth Proportional to 18,790.15, 28,187.54 and 6,139.61

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Solution

The fourth proportional to 18,790.15, 28,187.54 and 6,139.61 is: 9,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.15 : 28,187.54 = 6,139.61 : x
  2. Step 2: Convert to fraction form
    18,790.15/28,187.54 = 6,139.61/x
  3. Step 3: Cross multiply
    18,790.15x = 28,187.54 × 6,139.61
  4. Step 4: Simplify right side
    18,790.15x = 173,060,375.96
  5. Step 5: Solve for x
    x = 173,060,375.96/18,790.15
  6. Step 6: Final answer
    x = 9,210.17

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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.