Home / 20,919.95-31,351.42-11,546

Finding the Fourth Proportional to 20,919.95, 31,351.42 and 11,546

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Solution

The fourth proportional to 20,919.95, 31,351.42 and 11,546 is: 17,303.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.95 : 31,351.42 = 11,546 : x
  2. Step 2: Convert to fraction form
    20,919.95/31,351.42 = 11,546/x
  3. Step 3: Cross multiply
    20,919.95x = 31,351.42 × 11,546
  4. Step 4: Simplify right side
    20,919.95x = 361,983,495.32
  5. Step 5: Solve for x
    x = 361,983,495.32/20,919.95
  6. Step 6: Final answer
    x = 17,303.27

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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.