Home / 18,513.17-25,521.59-13,198.76

Finding the Fourth Proportional to 18,513.17, 25,521.59 and 13,198.76

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Solution

The fourth proportional to 18,513.17, 25,521.59 and 13,198.76 is: 18,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.17 : 25,521.59 = 13,198.76 : x
  2. Step 2: Convert to fraction form
    18,513.17/25,521.59 = 13,198.76/x
  3. Step 3: Cross multiply
    18,513.17x = 25,521.59 × 13,198.76
  4. Step 4: Simplify right side
    18,513.17x = 336,853,147.63
  5. Step 5: Solve for x
    x = 336,853,147.63/18,513.17
  6. Step 6: Final answer
    x = 18,195.33

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Half scale
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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.