Home / 39,585.50-54,625.91-21,680.12

Finding the Fourth Proportional to 39,585.50, 54,625.91 and 21,680.12

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Solution

The fourth proportional to 39,585.50, 54,625.91 and 21,680.12 is: 29,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,585.50 : 54,625.91 = 21,680.12 : x
  2. Step 2: Convert to fraction form
    39,585.50/54,625.91 = 21,680.12/x
  3. Step 3: Cross multiply
    39,585.50x = 54,625.91 × 21,680.12
  4. Step 4: Simplify right side
    39,585.50x = 1,184,296,312.07
  5. Step 5: Solve for x
    x = 1,184,296,312.07/39,585.50
  6. Step 6: Final answer
    x = 29,917.43

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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.