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Finding the Fourth Proportional to 20,515.80, 30,773.84 and 7,368.29

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Solution

The fourth proportional to 20,515.80, 30,773.84 and 7,368.29 is: 11,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.80 : 30,773.84 = 7,368.29 : x
  2. Step 2: Convert to fraction form
    20,515.80/30,773.84 = 7,368.29/x
  3. Step 3: Cross multiply
    20,515.80x = 30,773.84 × 7,368.29
  4. Step 4: Simplify right side
    20,515.80x = 226,750,577.53
  5. Step 5: Solve for x
    x = 226,750,577.53/20,515.80
  6. Step 6: Final answer
    x = 11,052.49

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1.5x scale

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.