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Finding the Fourth Proportional to 17,752.65, 26,628.78 and 12,189.03

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Solution

The fourth proportional to 17,752.65, 26,628.78 and 12,189.03 is: 18,283.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,752.65 : 26,628.78 = 12,189.03 : x
  2. Step 2: Convert to fraction form
    17,752.65/26,628.78 = 12,189.03/x
  3. Step 3: Cross multiply
    17,752.65x = 26,628.78 × 12,189.03
  4. Step 4: Simplify right side
    17,752.65x = 324,578,998.28
  5. Step 5: Solve for x
    x = 324,578,998.28/17,752.65
  6. Step 6: Final answer
    x = 18,283.41

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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.