Home / 27,759.94-38,309.69-15,821.35

Finding the Fourth Proportional to 27,759.94, 38,309.69 and 15,821.35

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Solution

The fourth proportional to 27,759.94, 38,309.69 and 15,821.35 is: 21,834.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,759.94 : 38,309.69 = 15,821.35 : x
  2. Step 2: Convert to fraction form
    27,759.94/38,309.69 = 15,821.35/x
  3. Step 3: Cross multiply
    27,759.94x = 38,309.69 × 15,821.35
  4. Step 4: Simplify right side
    27,759.94x = 606,110,957.66
  5. Step 5: Solve for x
    x = 606,110,957.66/27,759.94
  6. Step 6: Final answer
    x = 21,834.02

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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.