Home / 28,802.39-39,708.83-21,601.69

Finding the Fourth Proportional to 28,802.39, 39,708.83 and 21,601.69

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Solution

The fourth proportional to 28,802.39, 39,708.83 and 21,601.69 is: 29,781.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,802.39 : 39,708.83 = 21,601.69 : x
  2. Step 2: Convert to fraction form
    28,802.39/39,708.83 = 21,601.69/x
  3. Step 3: Cross multiply
    28,802.39x = 39,708.83 × 21,601.69
  4. Step 4: Simplify right side
    28,802.39x = 857,777,790.65
  5. Step 5: Solve for x
    x = 857,777,790.65/28,802.39
  6. Step 6: Final answer
    x = 29,781.48

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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.