Home / 21,760.35-30,029.01-12,200.19

Finding the Fourth Proportional to 21,760.35, 30,029.01 and 12,200.19

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Solution

The fourth proportional to 21,760.35, 30,029.01 and 12,200.19 is: 16,836.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.35 : 30,029.01 = 12,200.19 : x
  2. Step 2: Convert to fraction form
    21,760.35/30,029.01 = 12,200.19/x
  3. Step 3: Cross multiply
    21,760.35x = 30,029.01 × 12,200.19
  4. Step 4: Simplify right side
    21,760.35x = 366,359,627.51
  5. Step 5: Solve for x
    x = 366,359,627.51/21,760.35
  6. Step 6: Final answer
    x = 16,836.11

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Double scale
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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.