Home / 15,611.60-21,542.96-8,536.56

Finding the Fourth Proportional to 15,611.60, 21,542.96 and 8,536.56

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Solution

The fourth proportional to 15,611.60, 21,542.96 and 8,536.56 is: 11,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.60 : 21,542.96 = 8,536.56 : x
  2. Step 2: Convert to fraction form
    15,611.60/21,542.96 = 8,536.56/x
  3. Step 3: Cross multiply
    15,611.60x = 21,542.96 × 8,536.56
  4. Step 4: Simplify right side
    15,611.60x = 183,902,770.62
  5. Step 5: Solve for x
    x = 183,902,770.62/15,611.60
  6. Step 6: Final answer
    x = 11,779.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.