Home / 20,103.70-27,746.42-11,154.08

Finding the Fourth Proportional to 20,103.70, 27,746.42 and 11,154.08

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Solution

The fourth proportional to 20,103.70, 27,746.42 and 11,154.08 is: 15,394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.70 : 27,746.42 = 11,154.08 : x
  2. Step 2: Convert to fraction form
    20,103.70/27,746.42 = 11,154.08/x
  3. Step 3: Cross multiply
    20,103.70x = 27,746.42 × 11,154.08
  4. Step 4: Simplify right side
    20,103.70x = 309,485,788.39
  5. Step 5: Solve for x
    x = 309,485,788.39/20,103.70
  6. Step 6: Final answer
    x = 15,394.47

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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.