Home / 39,635.77-54,696.18-21,730.16

Finding the Fourth Proportional to 39,635.77, 54,696.18 and 21,730.16

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Solution

The fourth proportional to 39,635.77, 54,696.18 and 21,730.16 is: 29,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.77 : 54,696.18 = 21,730.16 : x
  2. Step 2: Convert to fraction form
    39,635.77/54,696.18 = 21,730.16/x
  3. Step 3: Cross multiply
    39,635.77x = 54,696.18 × 21,730.16
  4. Step 4: Simplify right side
    39,635.77x = 1,188,556,634.14
  5. Step 5: Solve for x
    x = 1,188,556,634.14/39,635.77
  6. Step 6: Final answer
    x = 29,986.97

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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.