Home / 39,360.70-54,317.30-21,455.66

Finding the Fourth Proportional to 39,360.70, 54,317.30 and 21,455.66

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Solution

The fourth proportional to 39,360.70, 54,317.30 and 21,455.66 is: 29,608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,360.70 : 54,317.30 = 21,455.66 : x
  2. Step 2: Convert to fraction form
    39,360.70/54,317.30 = 21,455.66/x
  3. Step 3: Cross multiply
    39,360.70x = 54,317.30 × 21,455.66
  4. Step 4: Simplify right side
    39,360.70x = 1,165,413,520.92
  5. Step 5: Solve for x
    x = 1,165,413,520.92/39,360.70
  6. Step 6: Final answer
    x = 29,608.56

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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.