Home / 36,869.70-55,312.80-20,221.20

Finding the Fourth Proportional to 36,869.70, 55,312.80 and 20,221.20

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Solution

The fourth proportional to 36,869.70, 55,312.80 and 20,221.20 is: 30,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,869.70 : 55,312.80 = 20,221.20 : x
  2. Step 2: Convert to fraction form
    36,869.70/55,312.80 = 20,221.20/x
  3. Step 3: Cross multiply
    36,869.70x = 55,312.80 × 20,221.20
  4. Step 4: Simplify right side
    36,869.70x = 1,118,491,191.36
  5. Step 5: Solve for x
    x = 1,118,491,191.36/36,869.70
  6. Step 6: Final answer
    x = 30,336.32

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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.