Home / 39,403.94-54,376.43-21,499.07

Finding the Fourth Proportional to 39,403.94, 54,376.43 and 21,499.07

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Solution

The fourth proportional to 39,403.94, 54,376.43 and 21,499.07 is: 29,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,403.94 : 54,376.43 = 21,499.07 : x
  2. Step 2: Convert to fraction form
    39,403.94/54,376.43 = 21,499.07/x
  3. Step 3: Cross multiply
    39,403.94x = 54,376.43 × 21,499.07
  4. Step 4: Simplify right side
    39,403.94x = 1,169,042,295.54
  5. Step 5: Solve for x
    x = 1,169,042,295.54/39,403.94
  6. Step 6: Final answer
    x = 29,668.16

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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.