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Finding the Fourth Proportional to 18,996.50, 26,215.18 and 10,613

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Solution

The fourth proportional to 18,996.50, 26,215.18 and 10,613 is: 14,645.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.50 : 26,215.18 = 10,613 : x
  2. Step 2: Convert to fraction form
    18,996.50/26,215.18 = 10,613/x
  3. Step 3: Cross multiply
    18,996.50x = 26,215.18 × 10,613
  4. Step 4: Simplify right side
    18,996.50x = 278,221,705.34
  5. Step 5: Solve for x
    x = 278,221,705.34/18,996.50
  6. Step 6: Final answer
    x = 14,645.95

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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.