Home / 39,636.27-54,696.87-21,730.66

Finding the Fourth Proportional to 39,636.27, 54,696.87 and 21,730.66

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Solution

The fourth proportional to 39,636.27, 54,696.87 and 21,730.66 is: 29,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,636.27 : 54,696.87 = 21,730.66 : x
  2. Step 2: Convert to fraction form
    39,636.27/54,696.87 = 21,730.66/x
  3. Step 3: Cross multiply
    39,636.27x = 54,696.87 × 21,730.66
  4. Step 4: Simplify right side
    39,636.27x = 1,188,599,085.03
  5. Step 5: Solve for x
    x = 1,188,599,085.03/39,636.27
  6. Step 6: Final answer
    x = 29,987.66

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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.