Home / 39,635.58-54,696.47-21,730.74

Finding the Fourth Proportional to 39,635.58, 54,696.47 and 21,730.74

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Solution

The fourth proportional to 39,635.58, 54,696.47 and 21,730.74 is: 29,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.58 : 54,696.47 = 21,730.74 : x
  2. Step 2: Convert to fraction form
    39,635.58/54,696.47 = 21,730.74/x
  3. Step 3: Cross multiply
    39,635.58x = 54,696.47 × 21,730.74
  4. Step 4: Simplify right side
    39,635.58x = 1,188,594,549.33
  5. Step 5: Solve for x
    x = 1,188,594,549.33/39,635.58
  6. Step 6: Final answer
    x = 29,988.07

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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.