Home / 39,403.41-54,376.88-21,498.79

Finding the Fourth Proportional to 39,403.41, 54,376.88 and 21,498.79

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Solution

The fourth proportional to 39,403.41, 54,376.88 and 21,498.79 is: 29,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,403.41 : 54,376.88 = 21,498.79 : x
  2. Step 2: Convert to fraction form
    39,403.41/54,376.88 = 21,498.79/x
  3. Step 3: Cross multiply
    39,403.41x = 54,376.88 × 21,498.79
  4. Step 4: Simplify right side
    39,403.41x = 1,169,036,744.60
  5. Step 5: Solve for x
    x = 1,169,036,744.60/39,403.41
  6. Step 6: Final answer
    x = 29,668.42

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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.