Home / 28,901.38-39,878.49-18,283.54

Finding the Fourth Proportional to 28,901.38, 39,878.49 and 18,283.54

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Solution

The fourth proportional to 28,901.38, 39,878.49 and 18,283.54 is: 25,227.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,901.38 : 39,878.49 = 18,283.54 : x
  2. Step 2: Convert to fraction form
    28,901.38/39,878.49 = 18,283.54/x
  3. Step 3: Cross multiply
    28,901.38x = 39,878.49 × 18,283.54
  4. Step 4: Simplify right side
    28,901.38x = 729,119,967.05
  5. Step 5: Solve for x
    x = 729,119,967.05/28,901.38
  6. Step 6: Final answer
    x = 25,227.86

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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.