Home / 27,800.35-38,361.60-15,861.38

Finding the Fourth Proportional to 27,800.35, 38,361.60 and 15,861.38

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Solution

The fourth proportional to 27,800.35, 38,361.60 and 15,861.38 is: 21,887.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,800.35 : 38,361.60 = 15,861.38 : x
  2. Step 2: Convert to fraction form
    27,800.35/38,361.60 = 15,861.38/x
  3. Step 3: Cross multiply
    27,800.35x = 38,361.60 × 15,861.38
  4. Step 4: Simplify right side
    27,800.35x = 608,467,723.20
  5. Step 5: Solve for x
    x = 608,467,723.20/27,800.35
  6. Step 6: Final answer
    x = 21,887.05

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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.