Home / 21,786.26-30,065.35-12,711.36

Finding the Fourth Proportional to 21,786.26, 30,065.35 and 12,711.36

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Solution

The fourth proportional to 21,786.26, 30,065.35 and 12,711.36 is: 17,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.26 : 30,065.35 = 12,711.36 : x
  2. Step 2: Convert to fraction form
    21,786.26/30,065.35 = 12,711.36/x
  3. Step 3: Cross multiply
    21,786.26x = 30,065.35 × 12,711.36
  4. Step 4: Simplify right side
    21,786.26x = 382,171,455.60
  5. Step 5: Solve for x
    x = 382,171,455.60/21,786.26
  6. Step 6: Final answer
    x = 17,541.85

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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.