Home / 18,518.70-27,785.61-9,761.34

Finding the Fourth Proportional to 18,518.70, 27,785.61 and 9,761.34

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Solution

The fourth proportional to 18,518.70, 27,785.61 and 9,761.34 is: 14,645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.70 : 27,785.61 = 9,761.34 : x
  2. Step 2: Convert to fraction form
    18,518.70/27,785.61 = 9,761.34/x
  3. Step 3: Cross multiply
    18,518.70x = 27,785.61 × 9,761.34
  4. Step 4: Simplify right side
    18,518.70x = 271,224,786.32
  5. Step 5: Solve for x
    x = 271,224,786.32/18,518.70
  6. Step 6: Final answer
    x = 14,645.99

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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.