Home / 28,727.20-43,090.80-12,343.20

Finding the Fourth Proportional to 28,727.20, 43,090.80 and 12,343.20

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Solution

The fourth proportional to 28,727.20, 43,090.80 and 12,343.20 is: 18,514.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,727.20 : 43,090.80 = 12,343.20 : x
  2. Step 2: Convert to fraction form
    28,727.20/43,090.80 = 12,343.20/x
  3. Step 3: Cross multiply
    28,727.20x = 43,090.80 × 12,343.20
  4. Step 4: Simplify right side
    28,727.20x = 531,878,362.56
  5. Step 5: Solve for x
    x = 531,878,362.56/28,727.20
  6. Step 6: Final answer
    x = 18,514.80

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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.