Home / 18,768.29-28,157.30-7,081.61

Finding the Fourth Proportional to 18,768.29, 28,157.30 and 7,081.61

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Solution

The fourth proportional to 18,768.29, 28,157.30 and 7,081.61 is: 10,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.29 : 28,157.30 = 7,081.61 : x
  2. Step 2: Convert to fraction form
    18,768.29/28,157.30 = 7,081.61/x
  3. Step 3: Cross multiply
    18,768.29x = 28,157.30 × 7,081.61
  4. Step 4: Simplify right side
    18,768.29x = 199,398,981.84
  5. Step 5: Solve for x
    x = 199,398,981.84/18,768.29
  6. Step 6: Final answer
    x = 10,624.25

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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.