Home / 36,678.62-55,009.38-11,720.90

Finding the Fourth Proportional to 36,678.62, 55,009.38 and 11,720.90

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Solution

The fourth proportional to 36,678.62, 55,009.38 and 11,720.90 is: 17,578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,678.62 : 55,009.38 = 11,720.90 : x
  2. Step 2: Convert to fraction form
    36,678.62/55,009.38 = 11,720.90/x
  3. Step 3: Cross multiply
    36,678.62x = 55,009.38 × 11,720.90
  4. Step 4: Simplify right side
    36,678.62x = 644,759,442.04
  5. Step 5: Solve for x
    x = 644,759,442.04/36,678.62
  6. Step 6: Final answer
    x = 17,578.62

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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.