Home / 28,578.21-42,869.36-9,857.97

Finding the Fourth Proportional to 28,578.21, 42,869.36 and 9,857.97

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Solution

The fourth proportional to 28,578.21, 42,869.36 and 9,857.97 is: 14,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.21 : 42,869.36 = 9,857.97 : x
  2. Step 2: Convert to fraction form
    28,578.21/42,869.36 = 9,857.97/x
  3. Step 3: Cross multiply
    28,578.21x = 42,869.36 × 9,857.97
  4. Step 4: Simplify right side
    28,578.21x = 422,604,864.80
  5. Step 5: Solve for x
    x = 422,604,864.80/28,578.21
  6. Step 6: Final answer
    x = 14,787.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.