Home / 21,551.52-29,738.68-12,119.88

Finding the Fourth Proportional to 21,551.52, 29,738.68 and 12,119.88

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Solution

The fourth proportional to 21,551.52, 29,738.68 and 12,119.88 is: 16,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.52 : 29,738.68 = 12,119.88 : x
  2. Step 2: Convert to fraction form
    21,551.52/29,738.68 = 12,119.88/x
  3. Step 3: Cross multiply
    21,551.52x = 29,738.68 × 12,119.88
  4. Step 4: Simplify right side
    21,551.52x = 360,429,232.96
  5. Step 5: Solve for x
    x = 360,429,232.96/21,551.52
  6. Step 6: Final answer
    x = 16,724.07

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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.