Home / 20,103.04-27,743.88-11,720.08

Finding the Fourth Proportional to 20,103.04, 27,743.88 and 11,720.08

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Solution

The fourth proportional to 20,103.04, 27,743.88 and 11,720.08 is: 16,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.04 : 27,743.88 = 11,720.08 : x
  2. Step 2: Convert to fraction form
    20,103.04/27,743.88 = 11,720.08/x
  3. Step 3: Cross multiply
    20,103.04x = 27,743.88 × 11,720.08
  4. Step 4: Simplify right side
    20,103.04x = 325,160,493.11
  5. Step 5: Solve for x
    x = 325,160,493.11/20,103.04
  6. Step 6: Final answer
    x = 16,174.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.