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Finding the Fourth Proportional to 29,993.08, 45,009.72 and 12,462.88

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Solution

The fourth proportional to 29,993.08, 45,009.72 and 12,462.88 is: 18,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,993.08 : 45,009.72 = 12,462.88 : x
  2. Step 2: Convert to fraction form
    29,993.08/45,009.72 = 12,462.88/x
  3. Step 3: Cross multiply
    29,993.08x = 45,009.72 × 12,462.88
  4. Step 4: Simplify right side
    29,993.08x = 560,950,739.19
  5. Step 5: Solve for x
    x = 560,950,739.19/29,993.08
  6. Step 6: Final answer
    x = 18,702.67

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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.