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Finding the Fourth Proportional to 18,381.76, 27,377.96 and 18,292.16

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Solution

The fourth proportional to 18,381.76, 27,377.96 and 18,292.16 is: 27,244.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.76 : 27,377.96 = 18,292.16 : x
  2. Step 2: Convert to fraction form
    18,381.76/27,377.96 = 18,292.16/x
  3. Step 3: Cross multiply
    18,381.76x = 27,377.96 × 18,292.16
  4. Step 4: Simplify right side
    18,381.76x = 500,802,024.79
  5. Step 5: Solve for x
    x = 500,802,024.79/18,381.76
  6. Step 6: Final answer
    x = 27,244.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.