Home / 11,785.12-17,666.68-3,988.48

Finding the Fourth Proportional to 11,785.12, 17,666.68 and 3,988.48

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Solution

The fourth proportional to 11,785.12, 17,666.68 and 3,988.48 is: 5,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.12 : 17,666.68 = 3,988.48 : x
  2. Step 2: Convert to fraction form
    11,785.12/17,666.68 = 3,988.48/x
  3. Step 3: Cross multiply
    11,785.12x = 17,666.68 × 3,988.48
  4. Step 4: Simplify right side
    11,785.12x = 70,463,199.85
  5. Step 5: Solve for x
    x = 70,463,199.85/11,785.12
  6. Step 6: Final answer
    x = 5,979.00

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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.