Home / 19,819.99-27,345.90-13,103.17

Finding the Fourth Proportional to 19,819.99, 27,345.90 and 13,103.17

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Solution

The fourth proportional to 19,819.99, 27,345.90 and 13,103.17 is: 18,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.99 : 27,345.90 = 13,103.17 : x
  2. Step 2: Convert to fraction form
    19,819.99/27,345.90 = 13,103.17/x
  3. Step 3: Cross multiply
    19,819.99x = 27,345.90 × 13,103.17
  4. Step 4: Simplify right side
    19,819.99x = 358,317,976.50
  5. Step 5: Solve for x
    x = 358,317,976.50/19,819.99
  6. Step 6: Final answer
    x = 18,078.62

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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.