Home / 36,990.40-55,509.30-13,615

Finding the Fourth Proportional to 36,990.40, 55,509.30 and 13,615

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Solution

The fourth proportional to 36,990.40, 55,509.30 and 13,615 is: 20,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,990.40 : 55,509.30 = 13,615 : x
  2. Step 2: Convert to fraction form
    36,990.40/55,509.30 = 13,615/x
  3. Step 3: Cross multiply
    36,990.40x = 55,509.30 × 13,615
  4. Step 4: Simplify right side
    36,990.40x = 755,759,119.50
  5. Step 5: Solve for x
    x = 755,759,119.50/36,990.40
  6. Step 6: Final answer
    x = 20,431.22

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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.