Home / 9,920.85-14,874.60-5,235.90

Finding the Fourth Proportional to 9,920.85, 14,874.60 and 5,235.90

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Solution

The fourth proportional to 9,920.85, 14,874.60 and 5,235.90 is: 7,850.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.85 : 14,874.60 = 5,235.90 : x
  2. Step 2: Convert to fraction form
    9,920.85/14,874.60 = 5,235.90/x
  3. Step 3: Cross multiply
    9,920.85x = 14,874.60 × 5,235.90
  4. Step 4: Simplify right side
    9,920.85x = 77,881,918.14
  5. Step 5: Solve for x
    x = 77,881,918.14/9,920.85
  6. Step 6: Final answer
    x = 7,850.33

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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.