Home / 28,299.78-39,042.81-18,227.43

Finding the Fourth Proportional to 28,299.78, 39,042.81 and 18,227.43

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Solution

The fourth proportional to 28,299.78, 39,042.81 and 18,227.43 is: 25,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.78 : 39,042.81 = 18,227.43 : x
  2. Step 2: Convert to fraction form
    28,299.78/39,042.81 = 18,227.43/x
  3. Step 3: Cross multiply
    28,299.78x = 39,042.81 × 18,227.43
  4. Step 4: Simplify right side
    28,299.78x = 711,650,086.28
  5. Step 5: Solve for x
    x = 711,650,086.28/28,299.78
  6. Step 6: Final answer
    x = 25,146.84

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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.