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Finding the Fourth Proportional to 17,812.13, 26,727.29 and 7,289.91

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Solution

The fourth proportional to 17,812.13, 26,727.29 and 7,289.91 is: 10,938.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.13 : 26,727.29 = 7,289.91 : x
  2. Step 2: Convert to fraction form
    17,812.13/26,727.29 = 7,289.91/x
  3. Step 3: Cross multiply
    17,812.13x = 26,727.29 × 7,289.91
  4. Step 4: Simplify right side
    17,812.13x = 194,839,502.19
  5. Step 5: Solve for x
    x = 194,839,502.19/17,812.13
  6. Step 6: Final answer
    x = 10,938.59

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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.