Home / 21,210.82-31,788.55-11,850.46

Finding the Fourth Proportional to 21,210.82, 31,788.55 and 11,850.46

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Solution

The fourth proportional to 21,210.82, 31,788.55 and 11,850.46 is: 17,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.82 : 31,788.55 = 11,850.46 : x
  2. Step 2: Convert to fraction form
    21,210.82/31,788.55 = 11,850.46/x
  3. Step 3: Cross multiply
    21,210.82x = 31,788.55 × 11,850.46
  4. Step 4: Simplify right side
    21,210.82x = 376,708,940.23
  5. Step 5: Solve for x
    x = 376,708,940.23/21,210.82
  6. Step 6: Final answer
    x = 17,760.23

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1.5x scale

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.