Home / 39,625.34-54,682.65-21,720.31

Finding the Fourth Proportional to 39,625.34, 54,682.65 and 21,720.31

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Solution

The fourth proportional to 39,625.34, 54,682.65 and 21,720.31 is: 29,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,625.34 : 54,682.65 = 21,720.31 : x
  2. Step 2: Convert to fraction form
    39,625.34/54,682.65 = 21,720.31/x
  3. Step 3: Cross multiply
    39,625.34x = 54,682.65 × 21,720.31
  4. Step 4: Simplify right side
    39,625.34x = 1,187,723,972.91
  5. Step 5: Solve for x
    x = 1,187,723,972.91/39,625.34
  6. Step 6: Final answer
    x = 29,973.85

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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.