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Finding the Fourth Proportional to 18,996.63, 28,486.68 and 7,301.63

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Solution

The fourth proportional to 18,996.63, 28,486.68 and 7,301.63 is: 10,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.63 : 28,486.68 = 7,301.63 : x
  2. Step 2: Convert to fraction form
    18,996.63/28,486.68 = 7,301.63/x
  3. Step 3: Cross multiply
    18,996.63x = 28,486.68 × 7,301.63
  4. Step 4: Simplify right side
    18,996.63x = 207,999,054.86
  5. Step 5: Solve for x
    x = 207,999,054.86/18,996.63
  6. Step 6: Final answer
    x = 10,949.26

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.