Home / 39,379.85-54,343.47-21,474.47

Finding the Fourth Proportional to 39,379.85, 54,343.47 and 21,474.47

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Solution

The fourth proportional to 39,379.85, 54,343.47 and 21,474.47 is: 29,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.85 : 54,343.47 = 21,474.47 : x
  2. Step 2: Convert to fraction form
    39,379.85/54,343.47 = 21,474.47/x
  3. Step 3: Cross multiply
    39,379.85x = 54,343.47 × 21,474.47
  4. Step 4: Simplify right side
    39,379.85x = 1,166,997,216.21
  5. Step 5: Solve for x
    x = 1,166,997,216.21/39,379.85
  6. Step 6: Final answer
    x = 29,634.37

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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.