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Finding the Fourth Proportional to 19,617.75, 27,066.51 and 11,118.51

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Solution

The fourth proportional to 19,617.75, 27,066.51 and 11,118.51 is: 15,340.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,617.75 : 27,066.51 = 11,118.51 : x
  2. Step 2: Convert to fraction form
    19,617.75/27,066.51 = 11,118.51/x
  3. Step 3: Cross multiply
    19,617.75x = 27,066.51 × 11,118.51
  4. Step 4: Simplify right side
    19,617.75x = 300,939,262.10
  5. Step 5: Solve for x
    x = 300,939,262.10/19,617.75
  6. Step 6: Final answer
    x = 15,340.15

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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.