Home / 18,511.71-25,519.59-13,197.30

Finding the Fourth Proportional to 18,511.71, 25,519.59 and 13,197.30

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Solution

The fourth proportional to 18,511.71, 25,519.59 and 13,197.30 is: 18,193.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.71 : 25,519.59 = 13,197.30 : x
  2. Step 2: Convert to fraction form
    18,511.71/25,519.59 = 13,197.30/x
  3. Step 3: Cross multiply
    18,511.71x = 25,519.59 × 13,197.30
  4. Step 4: Simplify right side
    18,511.71x = 336,789,587.77
  5. Step 5: Solve for x
    x = 336,789,587.77/18,511.71
  6. Step 6: Final answer
    x = 18,193.33

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Double scale
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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.