Home / 21,226.85-29,322.95-20,105.82

Finding the Fourth Proportional to 21,226.85, 29,322.95 and 20,105.82

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Solution

The fourth proportional to 21,226.85, 29,322.95 and 20,105.82 is: 27,774.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.85 : 29,322.95 = 20,105.82 : x
  2. Step 2: Convert to fraction form
    21,226.85/29,322.95 = 20,105.82/x
  3. Step 3: Cross multiply
    21,226.85x = 29,322.95 × 20,105.82
  4. Step 4: Simplify right side
    21,226.85x = 589,561,954.57
  5. Step 5: Solve for x
    x = 589,561,954.57/21,226.85
  6. Step 6: Final answer
    x = 27,774.35

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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.