Home / 39,278.46-54,205.42-21,374.62

Finding the Fourth Proportional to 39,278.46, 54,205.42 and 21,374.62

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Solution

The fourth proportional to 39,278.46, 54,205.42 and 21,374.62 is: 29,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.46 : 54,205.42 = 21,374.62 : x
  2. Step 2: Convert to fraction form
    39,278.46/54,205.42 = 21,374.62/x
  3. Step 3: Cross multiply
    39,278.46x = 54,205.42 × 21,374.62
  4. Step 4: Simplify right side
    39,278.46x = 1,158,620,379.33
  5. Step 5: Solve for x
    x = 1,158,620,379.33/39,278.46
  6. Step 6: Final answer
    x = 29,497.60

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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.