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Finding the Fourth Proportional to 18,996.98, 26,215.70 and 10,499.09

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Solution

The fourth proportional to 18,996.98, 26,215.70 and 10,499.09 is: 14,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.98 : 26,215.70 = 10,499.09 : x
  2. Step 2: Convert to fraction form
    18,996.98/26,215.70 = 10,499.09/x
  3. Step 3: Cross multiply
    18,996.98x = 26,215.70 × 10,499.09
  4. Step 4: Simplify right side
    18,996.98x = 275,240,810.14
  5. Step 5: Solve for x
    x = 275,240,810.14/18,996.98
  6. Step 6: Final answer
    x = 14,488.67

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Similar ratio
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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.