Home / 29,989.08-45,003.72-12,458.88

Finding the Fourth Proportional to 29,989.08, 45,003.72 and 12,458.88

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Solution

The fourth proportional to 29,989.08, 45,003.72 and 12,458.88 is: 18,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,989.08 : 45,003.72 = 12,458.88 : x
  2. Step 2: Convert to fraction form
    29,989.08/45,003.72 = 12,458.88/x
  3. Step 3: Cross multiply
    29,989.08x = 45,003.72 × 12,458.88
  4. Step 4: Simplify right side
    29,989.08x = 560,695,947.03
  5. Step 5: Solve for x
    x = 560,695,947.03/29,989.08
  6. Step 6: Final answer
    x = 18,696.67

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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.