Home / 21,790.11-30,060.36-12,833.33

Finding the Fourth Proportional to 21,790.11, 30,060.36 and 12,833.33

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Solution

The fourth proportional to 21,790.11, 30,060.36 and 12,833.33 is: 17,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.11 : 30,060.36 = 12,833.33 : x
  2. Step 2: Convert to fraction form
    21,790.11/30,060.36 = 12,833.33/x
  3. Step 3: Cross multiply
    21,790.11x = 30,060.36 × 12,833.33
  4. Step 4: Simplify right side
    21,790.11x = 385,774,519.80
  5. Step 5: Solve for x
    x = 385,774,519.80/21,790.11
  6. Step 6: Final answer
    x = 17,704.11

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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.