Home / 39,630.41-54,689.93-21,725.57

Finding the Fourth Proportional to 39,630.41, 54,689.93 and 21,725.57

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Solution

The fourth proportional to 39,630.41, 54,689.93 and 21,725.57 is: 29,981.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.41 : 54,689.93 = 21,725.57 : x
  2. Step 2: Convert to fraction form
    39,630.41/54,689.93 = 21,725.57/x
  3. Step 3: Cross multiply
    39,630.41x = 54,689.93 × 21,725.57
  4. Step 4: Simplify right side
    39,630.41x = 1,188,169,793.88
  5. Step 5: Solve for x
    x = 1,188,169,793.88/39,630.41
  6. Step 6: Final answer
    x = 29,981.26

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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.