Home / 28,578.20-42,855.27-10,805.87

Finding the Fourth Proportional to 28,578.20, 42,855.27 and 10,805.87

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Solution

The fourth proportional to 28,578.20, 42,855.27 and 10,805.87 is: 16,204.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.20 : 42,855.27 = 10,805.87 : x
  2. Step 2: Convert to fraction form
    28,578.20/42,855.27 = 10,805.87/x
  3. Step 3: Cross multiply
    28,578.20x = 42,855.27 × 10,805.87
  4. Step 4: Simplify right side
    28,578.20x = 463,088,262.16
  5. Step 5: Solve for x
    x = 463,088,262.16/28,578.20
  6. Step 6: Final answer
    x = 16,204.25

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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.