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Finding the Fourth Proportional to 18,263.42, 27,407.43 and 7,168.79

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Solution

The fourth proportional to 18,263.42, 27,407.43 and 7,168.79 is: 10,758.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.42 : 27,407.43 = 7,168.79 : x
  2. Step 2: Convert to fraction form
    18,263.42/27,407.43 = 7,168.79/x
  3. Step 3: Cross multiply
    18,263.42x = 27,407.43 × 7,168.79
  4. Step 4: Simplify right side
    18,263.42x = 196,478,178.63
  5. Step 5: Solve for x
    x = 196,478,178.63/18,263.42
  6. Step 6: Final answer
    x = 10,758.02

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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.