Home / 39,585.21-54,625.08-21,680.43

Finding the Fourth Proportional to 39,585.21, 54,625.08 and 21,680.43

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Solution

The fourth proportional to 39,585.21, 54,625.08 and 21,680.43 is: 29,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,585.21 : 54,625.08 = 21,680.43 : x
  2. Step 2: Convert to fraction form
    39,585.21/54,625.08 = 21,680.43/x
  3. Step 3: Cross multiply
    39,585.21x = 54,625.08 × 21,680.43
  4. Step 4: Simplify right side
    39,585.21x = 1,184,295,223.18
  5. Step 5: Solve for x
    x = 1,184,295,223.18/39,585.21
  6. Step 6: Final answer
    x = 29,917.62

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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.