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Finding the Fourth Proportional to 18,996.96, 26,214.96 and 10,612.80

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Solution

The fourth proportional to 18,996.96, 26,214.96 and 10,612.80 is: 14,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.96 : 26,214.96 = 10,612.80 : x
  2. Step 2: Convert to fraction form
    18,996.96/26,214.96 = 10,612.80/x
  3. Step 3: Cross multiply
    18,996.96x = 26,214.96 × 10,612.80
  4. Step 4: Simplify right side
    18,996.96x = 278,214,127.49
  5. Step 5: Solve for x
    x = 278,214,127.49/18,996.96
  6. Step 6: Final answer
    x = 14,645.19

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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.