Home / 27,991.36-38,627.74-15,894.12

Finding the Fourth Proportional to 27,991.36, 38,627.74 and 15,894.12

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Solution

The fourth proportional to 27,991.36, 38,627.74 and 15,894.12 is: 21,933.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.36 : 38,627.74 = 15,894.12 : x
  2. Step 2: Convert to fraction form
    27,991.36/38,627.74 = 15,894.12/x
  3. Step 3: Cross multiply
    27,991.36x = 38,627.74 × 15,894.12
  4. Step 4: Simplify right side
    27,991.36x = 613,953,934.89
  5. Step 5: Solve for x
    x = 613,953,934.89/27,991.36
  6. Step 6: Final answer
    x = 21,933.69

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Similar ratio
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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.