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Finding the Fourth Proportional to 18,133.85, 27,188.02 and 7,031.18

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Solution

The fourth proportional to 18,133.85, 27,188.02 and 7,031.18 is: 10,541.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.85 : 27,188.02 = 7,031.18 : x
  2. Step 2: Convert to fraction form
    18,133.85/27,188.02 = 7,031.18/x
  3. Step 3: Cross multiply
    18,133.85x = 27,188.02 × 7,031.18
  4. Step 4: Simplify right side
    18,133.85x = 191,163,912.86
  5. Step 5: Solve for x
    x = 191,163,912.86/18,133.85
  6. Step 6: Final answer
    x = 10,541.83

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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.