Home / 28,963.86-39,963.66-17,639.28

Finding the Fourth Proportional to 28,963.86, 39,963.66 and 17,639.28

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Solution

The fourth proportional to 28,963.86, 39,963.66 and 17,639.28 is: 24,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963.86 : 39,963.66 = 17,639.28 : x
  2. Step 2: Convert to fraction form
    28,963.86/39,963.66 = 17,639.28/x
  3. Step 3: Cross multiply
    28,963.86x = 39,963.66 × 17,639.28
  4. Step 4: Simplify right side
    28,963.86x = 704,930,188.56
  5. Step 5: Solve for x
    x = 704,930,188.56/28,963.86
  6. Step 6: Final answer
    x = 24,338.27

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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.