Home / 20,103.36-30,155.04-13,176.24

Finding the Fourth Proportional to 20,103.36, 30,155.04 and 13,176.24

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Solution

The fourth proportional to 20,103.36, 30,155.04 and 13,176.24 is: 19,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.36 : 30,155.04 = 13,176.24 : x
  2. Step 2: Convert to fraction form
    20,103.36/30,155.04 = 13,176.24/x
  3. Step 3: Cross multiply
    20,103.36x = 30,155.04 × 13,176.24
  4. Step 4: Simplify right side
    20,103.36x = 397,330,044.25
  5. Step 5: Solve for x
    x = 397,330,044.25/20,103.36
  6. Step 6: Final answer
    x = 19,764.36

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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.