Home / 18,785.44-28,206.69-11,808.91

Finding the Fourth Proportional to 18,785.44, 28,206.69 and 11,808.91

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Solution

The fourth proportional to 18,785.44, 28,206.69 and 11,808.91 is: 17,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.44 : 28,206.69 = 11,808.91 : x
  2. Step 2: Convert to fraction form
    18,785.44/28,206.69 = 11,808.91/x
  3. Step 3: Cross multiply
    18,785.44x = 28,206.69 × 11,808.91
  4. Step 4: Simplify right side
    18,785.44x = 333,090,263.61
  5. Step 5: Solve for x
    x = 333,090,263.61/18,785.44
  6. Step 6: Final answer
    x = 17,731.30

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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.