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Finding the Fourth Proportional to 12,381.19, 17,086.04 and 6,792.19

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Solution

The fourth proportional to 12,381.19, 17,086.04 and 6,792.19 is: 9,373.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.19 : 17,086.04 = 6,792.19 : x
  2. Step 2: Convert to fraction form
    12,381.19/17,086.04 = 6,792.19/x
  3. Step 3: Cross multiply
    12,381.19x = 17,086.04 × 6,792.19
  4. Step 4: Simplify right side
    12,381.19x = 116,051,578.82
  5. Step 5: Solve for x
    x = 116,051,578.82/12,381.19
  6. Step 6: Final answer
    x = 9,373.22

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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.