Home / 21,780.26-30,058.07-12,833.73

Finding the Fourth Proportional to 21,780.26, 30,058.07 and 12,833.73

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Solution

The fourth proportional to 21,780.26, 30,058.07 and 12,833.73 is: 17,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.26 : 30,058.07 = 12,833.73 : x
  2. Step 2: Convert to fraction form
    21,780.26/30,058.07 = 12,833.73/x
  3. Step 3: Cross multiply
    21,780.26x = 30,058.07 × 12,833.73
  4. Step 4: Simplify right side
    21,780.26x = 385,757,154.70
  5. Step 5: Solve for x
    x = 385,757,154.70/21,780.26
  6. Step 6: Final answer
    x = 17,711.32

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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.