Home / 20,370.74-30,552.90-12,470.54

Finding the Fourth Proportional to 20,370.74, 30,552.90 and 12,470.54

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Solution

The fourth proportional to 20,370.74, 30,552.90 and 12,470.54 is: 18,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.74 : 30,552.90 = 12,470.54 : x
  2. Step 2: Convert to fraction form
    20,370.74/30,552.90 = 12,470.54/x
  3. Step 3: Cross multiply
    20,370.74x = 30,552.90 × 12,470.54
  4. Step 4: Simplify right side
    20,370.74x = 381,011,161.57
  5. Step 5: Solve for x
    x = 381,011,161.57/20,370.74
  6. Step 6: Final answer
    x = 18,703.84

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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.