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Finding the Fourth Proportional to 18,587.39, 25,615.17 and 18,245.79

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Solution

The fourth proportional to 18,587.39, 25,615.17 and 18,245.79 is: 25,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.39 : 25,615.17 = 18,245.79 : x
  2. Step 2: Convert to fraction form
    18,587.39/25,615.17 = 18,245.79/x
  3. Step 3: Cross multiply
    18,587.39x = 25,615.17 × 18,245.79
  4. Step 4: Simplify right side
    18,587.39x = 467,369,012.63
  5. Step 5: Solve for x
    x = 467,369,012.63/18,587.39
  6. Step 6: Final answer
    x = 25,144.42

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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.