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Finding the Fourth Proportional to 18,423.90, 27,638.73 and 7,330.68

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Solution

The fourth proportional to 18,423.90, 27,638.73 and 7,330.68 is: 10,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.90 : 27,638.73 = 7,330.68 : x
  2. Step 2: Convert to fraction form
    18,423.90/27,638.73 = 7,330.68/x
  3. Step 3: Cross multiply
    18,423.90x = 27,638.73 × 7,330.68
  4. Step 4: Simplify right side
    18,423.90x = 202,610,685.24
  5. Step 5: Solve for x
    x = 202,610,685.24/18,423.90
  6. Step 6: Final answer
    x = 10,997.17

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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.