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Finding the Fourth Proportional to 18,995.68, 26,215.70 and 12,610.99

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Solution

The fourth proportional to 18,995.68, 26,215.70 and 12,610.99 is: 17,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.68 : 26,215.70 = 12,610.99 : x
  2. Step 2: Convert to fraction form
    18,995.68/26,215.70 = 12,610.99/x
  3. Step 3: Cross multiply
    18,995.68x = 26,215.70 × 12,610.99
  4. Step 4: Simplify right side
    18,995.68x = 330,605,930.54
  5. Step 5: Solve for x
    x = 330,605,930.54/18,995.68
  6. Step 6: Final answer
    x = 17,404.27

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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.