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Finding the Fourth Proportional to 18,125.56, 27,189.96 and 7,031.98

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Solution

The fourth proportional to 18,125.56, 27,189.96 and 7,031.98 is: 10,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.56 : 27,189.96 = 7,031.98 : x
  2. Step 2: Convert to fraction form
    18,125.56/27,189.96 = 7,031.98/x
  3. Step 3: Cross multiply
    18,125.56x = 27,189.96 × 7,031.98
  4. Step 4: Simplify right side
    18,125.56x = 191,199,254.92
  5. Step 5: Solve for x
    x = 191,199,254.92/18,125.56
  6. Step 6: Final answer
    x = 10,548.60

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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.