Home / 21,144.54-29,182.58-12,190.30

Finding the Fourth Proportional to 21,144.54, 29,182.58 and 12,190.30

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Solution

The fourth proportional to 21,144.54, 29,182.58 and 12,190.30 is: 16,824.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.54 : 29,182.58 = 12,190.30 : x
  2. Step 2: Convert to fraction form
    21,144.54/29,182.58 = 12,190.30/x
  3. Step 3: Cross multiply
    21,144.54x = 29,182.58 × 12,190.30
  4. Step 4: Simplify right side
    21,144.54x = 355,744,316.78
  5. Step 5: Solve for x
    x = 355,744,316.78/21,144.54
  6. Step 6: Final answer
    x = 16,824.40

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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.