Home / 20,566.80-30,844.06-8,720.37

Finding the Fourth Proportional to 20,566.80, 30,844.06 and 8,720.37

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Solution

The fourth proportional to 20,566.80, 30,844.06 and 8,720.37 is: 13,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.80 : 30,844.06 = 8,720.37 : x
  2. Step 2: Convert to fraction form
    20,566.80/30,844.06 = 8,720.37/x
  3. Step 3: Cross multiply
    20,566.80x = 30,844.06 × 8,720.37
  4. Step 4: Simplify right side
    20,566.80x = 268,971,692.61
  5. Step 5: Solve for x
    x = 268,971,692.61/20,566.80
  6. Step 6: Final answer
    x = 13,077.96

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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.