Home / 21,775.12-30,050.16-11,839.12

Finding the Fourth Proportional to 21,775.12, 30,050.16 and 11,839.12

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Solution

The fourth proportional to 21,775.12, 30,050.16 and 11,839.12 is: 16,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.12 : 30,050.16 = 11,839.12 : x
  2. Step 2: Convert to fraction form
    21,775.12/30,050.16 = 11,839.12/x
  3. Step 3: Cross multiply
    21,775.12x = 30,050.16 × 11,839.12
  4. Step 4: Simplify right side
    21,775.12x = 355,767,450.26
  5. Step 5: Solve for x
    x = 355,767,450.26/21,775.12
  6. Step 6: Final answer
    x = 16,338.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.