Home / 27,821.90-38,396.30-17,217.69

Finding the Fourth Proportional to 27,821.90, 38,396.30 and 17,217.69

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Solution

The fourth proportional to 27,821.90, 38,396.30 and 17,217.69 is: 23,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.90 : 38,396.30 = 17,217.69 : x
  2. Step 2: Convert to fraction form
    27,821.90/38,396.30 = 17,217.69/x
  3. Step 3: Cross multiply
    27,821.90x = 38,396.30 × 17,217.69
  4. Step 4: Simplify right side
    27,821.90x = 661,095,504.46
  5. Step 5: Solve for x
    x = 661,095,504.46/27,821.90
  6. Step 6: Final answer
    x = 23,761.70

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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.