Home / 20,393.54-30,586.65-12,975.96

Finding the Fourth Proportional to 20,393.54, 30,586.65 and 12,975.96

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Solution

The fourth proportional to 20,393.54, 30,586.65 and 12,975.96 is: 19,461.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.54 : 30,586.65 = 12,975.96 : x
  2. Step 2: Convert to fraction form
    20,393.54/30,586.65 = 12,975.96/x
  3. Step 3: Cross multiply
    20,393.54x = 30,586.65 × 12,975.96
  4. Step 4: Simplify right side
    20,393.54x = 396,891,146.93
  5. Step 5: Solve for x
    x = 396,891,146.93/20,393.54
  6. Step 6: Final answer
    x = 19,461.62

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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.