Home / 27,893.81-38,493.77-15,318.56

Finding the Fourth Proportional to 27,893.81, 38,493.77 and 15,318.56

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Solution

The fourth proportional to 27,893.81, 38,493.77 and 15,318.56 is: 21,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,893.81 : 38,493.77 = 15,318.56 : x
  2. Step 2: Convert to fraction form
    27,893.81/38,493.77 = 15,318.56/x
  3. Step 3: Cross multiply
    27,893.81x = 38,493.77 × 15,318.56
  4. Step 4: Simplify right side
    27,893.81x = 589,669,145.01
  5. Step 5: Solve for x
    x = 589,669,145.01/27,893.81
  6. Step 6: Final answer
    x = 21,139.78

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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.