Home / 27,894.14-38,494.80-15,318.90

Finding the Fourth Proportional to 27,894.14, 38,494.80 and 15,318.90

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Solution

The fourth proportional to 27,894.14, 38,494.80 and 15,318.90 is: 21,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,894.14 : 38,494.80 = 15,318.90 : x
  2. Step 2: Convert to fraction form
    27,894.14/38,494.80 = 15,318.90/x
  3. Step 3: Cross multiply
    27,894.14x = 38,494.80 × 15,318.90
  4. Step 4: Simplify right side
    27,894.14x = 589,697,991.72
  5. Step 5: Solve for x
    x = 589,697,991.72/27,894.14
  6. Step 6: Final answer
    x = 21,140.57

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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.