Home / 38,707.39-53,415.97-21,479.58

Finding the Fourth Proportional to 38,707.39, 53,415.97 and 21,479.58

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Solution

The fourth proportional to 38,707.39, 53,415.97 and 21,479.58 is: 29,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.39 : 53,415.97 = 21,479.58 : x
  2. Step 2: Convert to fraction form
    38,707.39/53,415.97 = 21,479.58/x
  3. Step 3: Cross multiply
    38,707.39x = 53,415.97 × 21,479.58
  4. Step 4: Simplify right side
    38,707.39x = 1,147,352,668.02
  5. Step 5: Solve for x
    x = 1,147,352,668.02/38,707.39
  6. Step 6: Final answer
    x = 29,641.70

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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.