Home / 11,785.20-17,678.10-3,020.18

Finding the Fourth Proportional to 11,785.20, 17,678.10 and 3,020.18

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Solution

The fourth proportional to 11,785.20, 17,678.10 and 3,020.18 is: 4,530.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.20 : 17,678.10 = 3,020.18 : x
  2. Step 2: Convert to fraction form
    11,785.20/17,678.10 = 3,020.18/x
  3. Step 3: Cross multiply
    11,785.20x = 17,678.10 × 3,020.18
  4. Step 4: Simplify right side
    11,785.20x = 53,391,044.06
  5. Step 5: Solve for x
    x = 53,391,044.06/11,785.20
  6. Step 6: Final answer
    x = 4,530.35

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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.