Home / 28,731.48-43,065.36-12,086.64

Finding the Fourth Proportional to 28,731.48, 43,065.36 and 12,086.64

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Solution

The fourth proportional to 28,731.48, 43,065.36 and 12,086.64 is: 18,116.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.48 : 43,065.36 = 12,086.64 : x
  2. Step 2: Convert to fraction form
    28,731.48/43,065.36 = 12,086.64/x
  3. Step 3: Cross multiply
    28,731.48x = 43,065.36 × 12,086.64
  4. Step 4: Simplify right side
    28,731.48x = 520,515,502.79
  5. Step 5: Solve for x
    x = 520,515,502.79/28,731.48
  6. Step 6: Final answer
    x = 18,116.56

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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.